fix: cleanup also in the render-and-sync function

internal/myks/environment.go

@@ -110,7 +110,7 @@ func (e *Environment) SyncAndRender(asyncLevel int, vendirSecrets string) error
 	if err := e.renderArgoCD(); err != nil {
 		return err
 	}
-	return process(asyncLevel, e.Applications, func(item interface{}) error {
+	err := process(asyncLevel, e.Applications, func(item interface{}) error {
 		app, ok := item.(*Application)
 		if !ok {
 			return fmt.Errorf("Unable to cast item to *Application")
@@ -129,6 +129,12 @@ func (e *Environment) SyncAndRender(asyncLevel int, vendirSecrets string) error
 		}
 		return app.renderArgoCD()
 	})
+	if err != nil {
+		log.Error().Err(err).Msg(e.Msg("Unable to sync and render applications"))
+		return err
+	}
+
+	return e.Cleanup()
 }
 
 func (e *Environment) Cleanup() error {