fix suffix model repo

app.py

@@ -61,7 +61,8 @@ def quantize_model(
     try:
         model_name = model_id.split("/")[-1]
         username = whoami(oauth_token.token)["name"]
-        new_repo_id = f"{username}/{model_name}-openvino-{dtype}"
+        suffix = f"{dtype}" if model_name.endswith("openvino") else f"openvino-{dtype}"
+        new_repo_id = f"{username}/{model_name}-{suffix}"
         library_name = TasksManager.infer_library_from_model(model_id, token=oauth_token.token)
 
         if library_name == "diffusers":