Fix retrieving migration uuid in export schema

yb-voyager/cmd/exportSchema.go

@@ -66,6 +66,11 @@ var exportSchemaCmd = &cobra.Command{
 }
 
 func exportSchema() error {
+	err := retrieveMigrationUUID()
+	if err != nil {
+		log.Errorf("failed to get migration UUID: %v", err)
+		return fmt.Errorf("failed to get migration UUID: %w", err)
+	}
 	if metaDBIsCreated(exportDir) && schemaIsExported() {
 		if startClean {
 			proceed := utils.AskPrompt(
@@ -93,7 +98,7 @@ func exportSchema() error {
 
 	utils.PrintAndLog("export of schema for source type as '%s'\n", source.DBType)
 	// Check connection with source database.
-	err := source.DB().Connect()
+	err = source.DB().Connect()
 	if err != nil {
 		log.Errorf("failed to connect to the source db: %s", err)
 		return fmt.Errorf("failed to connect to the source db: %w", err)
@@ -153,12 +158,6 @@ func exportSchema() error {
 		}
 	}
 
-	err = retrieveMigrationUUID()
-	if err != nil {
-		log.Errorf("failed to get migration UUID: %v", err)
-		return fmt.Errorf("failed to get migration UUID: %w", err)
-	}
-
 	exportSchemaStartEvent := createExportSchemaStartedEvent()
 	controlPlane.ExportSchemaStarted(&exportSchemaStartEvent)