fix bug

azurerm/internal/services/dataprotection/data_protection_backup_instance_postgresql_resource.go

@@ -6,7 +6,6 @@ import (
 	"log"
 	"time"
 
-	"github.com/hashicorp/go-azure-helpers/response"
 	"github.com/hashicorp/terraform-plugin-sdk/v2/helper/schema"
 	"github.com/terraform-providers/terraform-provider-azurerm/azurerm/helpers/azure"
 	"github.com/terraform-providers/terraform-provider-azurerm/azurerm/helpers/tf"
@@ -200,9 +199,6 @@ func resourceDataProtectionBackupInstancePostgreSQLDelete(d *schema.ResourceData
 
 	future, err := client.Delete(ctx, id.BackupVaultName, id.ResourceGroup, id.Name)
 	if err != nil {
-		if response.WasNotFound(future.Response()) {
-			return nil
-		}
 		return fmt.Errorf("deleting DataProtection BackupInstance (%q): %+v", id, err)
 	}
 
@@ -218,6 +214,9 @@ func policyProtectionStateRefreshFunc(ctx context.Context, client *dataprotectio
 		if err != nil {
 			return nil, "", fmt.Errorf("retrieving DataProtection BackupInstance (%q): %+v", id, err)
 		}
+		if res.Properties == nil || res.Properties.ProtectionStatus == nil {
+			return nil, "", fmt.Errorf("error reading DataProtection BackupInstance (%q) protection status: %+v", id, err)
+		}
 
 		return res, string(res.Properties.ProtectionStatus.Status), nil
 	}