[Fix] when run load pretain with local_files_only, local variable...

[Fix] when run load pretain with local_files_only, local variable 'cached_folder' referenced before assignment (#9376)

Fix local variable 'cached_folder' referenced before assignment in hub_utils.py

Fix when use `local_files_only=True` with `subfolder`, local variable 'cached_folder' referenced before assignment issue.
Co-authored-by: YiYi Xu <yixu310@gmail.com>

src/diffusers/utils/hub_utils.py

@@ -496,7 +496,7 @@ def _get_checkpoint_shard_files(
             local_dir=cache_dir, subfolder=subfolder, original_shard_filenames=original_shard_filenames
         )
         if subfolder is not None:
-            cached_folder = os.path.join(cached_folder, subfolder)
+            cached_folder = os.path.join(cache_dir, subfolder)
 
     return cached_folder, sharded_metadata