Fix loader publish action

Author: chenm1adsk

hooks/tk-desktop_actions.py

@@ -284,31 +284,28 @@ def _launch_publisher(self, action_name: str, sg_publish_data: dict) -> None:
         entity_ctx = engine.tank.context_from_entity(entity_type, entity_id)
 
         # Launch Publisher via its registered engine command callback.
-        publisher_app = None
         for cmd_settings in engine.commands.values():
             if cmd_settings.get("properties", {}).get("app") is None:
                 continue
             if cmd_settings["properties"]["app"].name == "tk-multi-publish2":
                 publisher_app = cmd_settings["properties"]["app"]
+                revision_id = sg_publish_data.get("sg_flow_revision_id")
+                single_file_mode = (
+                    action_name == "publish"
+                    and publisher_app.context.flow_project_id is not None
+                )
+                publisher_app.import_module("tk_multi_publish2").show_dialog(
+                    publisher_app,
+                    context=entity_ctx,
+                    root_item_properties=(
+                        {"am_revision_id": revision_id} if revision_id else None
+                    ),
+                    single_file_mode=single_file_mode,
+                )
                 break
         else:
             raise TankError(
                 "Could not find Publisher app (tk-multi-publish2)!\n\n"
                 "Please ensure tk-multi-publish2 is configured in "
                 "env/includes/desktop/project.yml under 'desktop.project: apps:'"
             )
-
-        tk_multi_publish2 = publisher_app.import_module("tk_multi_publish2")
-        revision_id = sg_publish_data.get("sg_flow_revision_id")
-        single_file_mode = (
-            action_name == "publish"
-            and publisher_app.context.flow_project_id is not None
-        )
-        tk_multi_publish2.show_dialog(
-            publisher_app,
-            context=entity_ctx,
-            root_item_properties=(
-                {"am_revision_id": revision_id} if revision_id else None
-            ),
-            single_file_mode=single_file_mode,
-        )