Fixes behaviour when azurerm resources disappear.

Regressions were introduced when fixing
https://github.com/hashicorp/terraform/pull/8607 . Specifically when
resources in the statefile are deleted or missing in real life, then
terraform plan would exit with an error when it recieved a 404 not
found. The correct behaviour would be to show a plan with the offer to
create the missing resources.

builtin/providers/azurerm/resource_arm_availability_set.go

@@ -118,12 +118,12 @@ func resourceArmAvailabilitySetRead(d *schema.ResourceData, meta interface{}) er
 
 	resp, err := availSetClient.Get(resGroup, name)
 	if err != nil {
-		return fmt.Errorf("Error making Read request on Azure Availability Set %s: %s", name, err)
-	}
 		if resp.StatusCode == http.StatusNotFound {
 			d.SetId("")
 			return nil
 		}
+		return fmt.Errorf("Error making Read request on Azure Availability Set %s: %s", name, err)
+	}
 
 	availSet := *resp.Properties
 	d.Set("platform_update_domain_count", availSet.PlatformUpdateDomainCount)

builtin/providers/azurerm/resource_arm_cdn_endpoint.go

@@ -226,12 +226,12 @@ func resourceArmCdnEndpointRead(d *schema.ResourceData, meta interface{}) error
 	log.Printf("[INFO] Trying to find the AzureRM CDN Endpoint %s (Profile: %s, RG: %s)", name, profileName, resGroup)
 	resp, err := cdnEndpointsClient.Get(name, profileName, resGroup)
 	if err != nil {
-		return fmt.Errorf("Error making Read request on Azure CDN Endpoint %s: %s", name, err)
-	}
 		if resp.StatusCode == http.StatusNotFound {
 			d.SetId("")
 			return nil
 		}
+		return fmt.Errorf("Error making Read request on Azure CDN Endpoint %s: %s", name, err)
+	}
 
 	d.Set("name", resp.Name)
 	d.Set("host_name", resp.Properties.HostName)

builtin/providers/azurerm/resource_arm_cdn_profile.go

@@ -100,12 +100,12 @@ func resourceArmCdnProfileRead(d *schema.ResourceData, meta interface{}) error {
 
 	resp, err := cdnProfilesClient.Get(name, resGroup)
 	if err != nil {
-		return fmt.Errorf("Error making Read request on Azure CDN Profile %s: %s", name, err)
-	}
 		if resp.StatusCode == http.StatusNotFound {
 			d.SetId("")
 			return nil
 		}
+		return fmt.Errorf("Error making Read request on Azure CDN Profile %s: %s", name, err)
+	}
 
 	if resp.Sku != nil {
 		d.Set("sku", string(resp.Sku.Name))

builtin/providers/azurerm/resource_arm_local_network_gateway.go

@@ -110,12 +110,12 @@ func resourceArmLocalNetworkGatewayRead(d *schema.ResourceData, meta interface{}
 
 	resp, err := lnetClient.Get(resGroup, name)
 	if err != nil {
-		return fmt.Errorf("Error reading the state of Azure ARM local network gateway '%s': %s", name, err)
-	}
 		if resp.StatusCode == http.StatusNotFound {
 			d.SetId("")
 			return nil
 		}
+		return fmt.Errorf("Error reading the state of Azure ARM local network gateway '%s': %s", name, err)
+	}
 
 	d.Set("name", resp.Name)
 	d.Set("location", resp.Location)

builtin/providers/azurerm/resource_arm_network_interface_card.go

@@ -246,12 +246,12 @@ func resourceArmNetworkInterfaceRead(d *schema.ResourceData, meta interface{}) e
 
 	resp, err := ifaceClient.Get(resGroup, name, "")
 	if err != nil {
-		return fmt.Errorf("Error making Read request on Azure Network Interface %s: %s", name, err)
-	}
 		if resp.StatusCode == http.StatusNotFound {
 			d.SetId("")
 			return nil
 		}
+		return fmt.Errorf("Error making Read request on Azure Network Interface %s: %s", name, err)
+	}
 
 	iface := *resp.Properties
 

builtin/providers/azurerm/resource_arm_network_security_group.go

@@ -192,12 +192,12 @@ func resourceArmNetworkSecurityGroupRead(d *schema.ResourceData, meta interface{
 
 	resp, err := secGroupClient.Get(resGroup, name, "")
 	if err != nil {
-		return fmt.Errorf("Error making Read request on Azure Network Security Group %s: %s", name, err)
-	}
 		if resp.StatusCode == http.StatusNotFound {
 			d.SetId("")
 			return nil
 		}
+		return fmt.Errorf("Error making Read request on Azure Network Security Group %s: %s", name, err)
+	}
 
 	if resp.Properties.SecurityRules != nil {
 		d.Set("security_rule", flattenNetworkSecurityRules(resp.Properties.SecurityRules))

builtin/providers/azurerm/resource_arm_network_security_rule.go

@@ -176,12 +176,12 @@ func resourceArmNetworkSecurityRuleRead(d *schema.ResourceData, meta interface{}
 
 	resp, err := secRuleClient.Get(resGroup, networkSGName, sgRuleName)
 	if err != nil {
-		return fmt.Errorf("Error making Read request on Azure Network Security Rule %s: %s", sgRuleName, err)
-	}
 		if resp.StatusCode == http.StatusNotFound {
 			d.SetId("")
 			return nil
 		}
+		return fmt.Errorf("Error making Read request on Azure Network Security Rule %s: %s", sgRuleName, err)
+	}
 
 	d.Set("access", resp.Properties.Access)
 	d.Set("destination_address_prefix", resp.Properties.DestinationAddressPrefix)

builtin/providers/azurerm/resource_arm_public_ip.go

@@ -166,12 +166,12 @@ func resourceArmPublicIpRead(d *schema.ResourceData, meta interface{}) error {
 
 	resp, err := publicIPClient.Get(resGroup, name, "")
 	if err != nil {
-		return fmt.Errorf("Error making Read request on Azure public ip %s: %s", name, err)
-	}
 		if resp.StatusCode == http.StatusNotFound {
 			d.SetId("")
 			return nil
 		}
+		return fmt.Errorf("Error making Read request on Azure public ip %s: %s", name, err)
+	}
 
 	d.Set("location", resp.Location)
 	d.Set("name", resp.Name)

builtin/providers/azurerm/resource_arm_route.go

@@ -113,12 +113,12 @@ func resourceArmRouteRead(d *schema.ResourceData, meta interface{}) error {
 
 	resp, err := routesClient.Get(resGroup, rtName, routeName)
 	if err != nil {
-		return fmt.Errorf("Error making Read request on Azure Route %s: %s", routeName, err)
-	}
 		if resp.StatusCode == http.StatusNotFound {
 			d.SetId("")
 			return nil
 		}
+		return fmt.Errorf("Error making Read request on Azure Route %s: %s", routeName, err)
+	}
 
 	return nil
 }

builtin/providers/azurerm/resource_arm_route_table.go

@@ -143,12 +143,12 @@ func resourceArmRouteTableRead(d *schema.ResourceData, meta interface{}) error {
 
 	resp, err := routeTablesClient.Get(resGroup, name, "")
 	if err != nil {
-		return fmt.Errorf("Error making Read request on Azure Route Table %s: %s", name, err)
-	}
 		if resp.StatusCode == http.StatusNotFound {
 			d.SetId("")
 			return nil
 		}
+		return fmt.Errorf("Error making Read request on Azure Route Table %s: %s", name, err)
+	}
 
 	if resp.Properties.Subnets != nil {
 		if len(*resp.Properties.Subnets) > 0 {

builtin/providers/azurerm/resource_arm_storage_account.go

@@ -256,12 +256,12 @@ func resourceArmStorageAccountRead(d *schema.ResourceData, meta interface{}) err
 
 	resp, err := client.GetProperties(resGroup, name)
 	if err != nil {
-		return fmt.Errorf("Error reading the state of AzureRM Storage Account %q: %s", name, err)
-	}
 		if resp.StatusCode == http.StatusNotFound {
 			d.SetId("")
 			return nil
 		}
+		return fmt.Errorf("Error reading the state of AzureRM Storage Account %q: %s", name, err)
+	}
 
 	keys, err := client.ListKeys(resGroup, name)
 	if err != nil {

builtin/providers/azurerm/resource_arm_subnet.go

@@ -133,12 +133,12 @@ func resourceArmSubnetRead(d *schema.ResourceData, meta interface{}) error {
 	resp, err := subnetClient.Get(resGroup, vnetName, name, "")
 
 	if err != nil {
-		return fmt.Errorf("Error making Read request on Azure Subnet %s: %s", name, err)
-	}
 		if resp.StatusCode == http.StatusNotFound {
 			d.SetId("")
 			return nil
 		}
+		return fmt.Errorf("Error making Read request on Azure Subnet %s: %s", name, err)
+	}
 
 	if resp.Properties.IPConfigurations != nil && len(*resp.Properties.IPConfigurations) > 0 {
 		ips := make([]string, 0, len(*resp.Properties.IPConfigurations))

builtin/providers/azurerm/resource_arm_template_deployment.go

@@ -144,12 +144,12 @@ func resourceArmTemplateDeploymentRead(d *schema.ResourceData, meta interface{})
 
 	resp, err := deployClient.Get(resGroup, name)
 	if err != nil {
-		return fmt.Errorf("Error making Read request on Azure RM Template Deployment %s: %s", name, err)
-	}
 		if resp.StatusCode == http.StatusNotFound {
 			d.SetId("")
 			return nil
 		}
+		return fmt.Errorf("Error making Read request on Azure RM Template Deployment %s: %s", name, err)
+	}
 
 	var outputs map[string]string
 	if resp.Properties.Outputs != nil && len(*resp.Properties.Outputs) > 0 {

builtin/providers/azurerm/resource_arm_traffic_manager_endpoint.go

@@ -153,12 +153,12 @@ func resourceArmTrafficManagerEndpointRead(d *schema.ResourceData, meta interfac
 
 	resp, err := client.Get(resGroup, profileName, endpointType, name)
 	if err != nil {
-		return fmt.Errorf("Error making Read request on TrafficManager Endpoint %s: %s", name, err)
-	}
 		if resp.StatusCode == http.StatusNotFound {
 			d.SetId("")
 			return nil
 		}
+		return fmt.Errorf("Error making Read request on TrafficManager Endpoint %s: %s", name, err)
+	}
 
 	endpoint := *resp.Properties
 

builtin/providers/azurerm/resource_arm_traffic_manager_profile.go

@@ -151,12 +151,12 @@ func resourceArmTrafficManagerProfileRead(d *schema.ResourceData, meta interface
 
 	resp, err := client.Get(resGroup, name)
 	if err != nil {
-		return fmt.Errorf("Error making Read request on Traffic Manager Profile %s: %s", name, err)
-	}
 		if resp.StatusCode == http.StatusNotFound {
 			d.SetId("")
 			return nil
 		}
+		return fmt.Errorf("Error making Read request on Traffic Manager Profile %s: %s", name, err)
+	}
 
 	profile := *resp.Properties
 

builtin/providers/azurerm/resource_arm_virtual_machine.go

@@ -520,12 +520,12 @@ func resourceArmVirtualMachineRead(d *schema.ResourceData, meta interface{}) err
 	resp, err := vmClient.Get(resGroup, name, "")
 
 	if err != nil {
-		return fmt.Errorf("Error making Read request on Azure Virtual Machine %s: %s", name, err)
-	}
 		if resp.StatusCode == http.StatusNotFound {
 			d.SetId("")
 			return nil
 		}
+		return fmt.Errorf("Error making Read request on Azure Virtual Machine %s: %s", name, err)
+	}
 
 	if resp.Plan != nil {
 		if err := d.Set("plan", flattenAzureRmVirtualMachinePlan(resp.Plan)); err != nil {

builtin/providers/azurerm/resource_arm_virtual_machine_scale_set.go

@@ -432,13 +432,13 @@ func resourceArmVirtualMachineScaleSetRead(d *schema.ResourceData, meta interfac
 
 	resp, err := vmScaleSetClient.Get(resGroup, name)
 	if err != nil {
-		return fmt.Errorf("Error making Read request on Azure Virtual Machine Scale Set %s: %s", name, err)
-	}
 		if resp.StatusCode == http.StatusNotFound {
 			log.Printf("[INFO] AzureRM Virtual Machine Scale Set (%s) Not Found. Removing from State", name)
 			d.SetId("")
 			return nil
 		}
+		return fmt.Errorf("Error making Read request on Azure Virtual Machine Scale Set %s: %s", name, err)
+	}
 
 	d.Set("location", resp.Location)
 	d.Set("name", resp.Name)

builtin/providers/azurerm/resource_arm_virtual_network.go

@@ -133,12 +133,13 @@ func resourceArmVirtualNetworkRead(d *schema.ResourceData, meta interface{}) err
 
 	resp, err := vnetClient.Get(resGroup, name, "")
 	if err != nil {
-		return fmt.Errorf("Error making Read request on Azure virtual network %s: %s", name, err)
-	}
 		if resp.StatusCode == http.StatusNotFound {
 			d.SetId("")
 			return nil
 		}
+		return fmt.Errorf("Error making Read request on Azure virtual network %s: %s", name, err)
+	}
+
 	vnet := *resp.Properties
 
 	// update appropriate values

builtin/providers/azurerm/resource_arm_virtual_network_peering.go

@@ -124,12 +124,12 @@ func resourceArmVirtualNetworkPeeringRead(d *schema.ResourceData, meta interface
 
 	resp, err := client.Get(resGroup, vnetName, name)
 	if err != nil {
-		return fmt.Errorf("Error making Read request on Azure virtual network peering %s: %s", name, err)
-	}
 		if resp.StatusCode == http.StatusNotFound {
 			d.SetId("")
 			return nil
 		}
+		return fmt.Errorf("Error making Read request on Azure virtual network peering %s: %s", name, err)
+	}
 
 	peer := *resp.Properties