Fixed creation of empty directories in path was entered mistaken (#11174)

FFixed creation of empty directories in path was entered mistaken

Co-authored-by: Glenn Jocher <glenn.jocher@ultralytics.com>

utils/downloads.py

@@ -118,8 +118,8 @@ def attempt_download(file, repo='ultralytics/yolov5', release='v7.0'):
                 except Exception:
                     tag = release
 
-        file.parent.mkdir(parents=True, exist_ok=True)  # make parent dir (if required)
         if name in assets:
+            file.parent.mkdir(parents=True, exist_ok=True)  # make parent dir (if required)
             safe_download(file,
                           url=f'https://github.com/{repo}/releases/download/{tag}/{name}',
                           min_bytes=1E5,