ensure banned_mask and indices in same device (#23901)

* ensure banned_mask and indices in same device

* ensure banned_mask and indices in same device

switch the order in which indices and banned_mask are created and create banned_mask on the proper device

src/transformers/generation/logits_process.py

@@ -649,8 +649,8 @@ class NoBadWordsLogitsProcessor(LogitsProcessor):
 
         else:
             if banned_mask_list:
-                banned_mask = torch.LongTensor(banned_mask_list)
-                indices = torch.ones(len(banned_mask))
+                indices = torch.ones(len(banned_mask_list))
+                banned_mask = torch.LongTensor(banned_mask_list, device=indices.device)
                 # A sparse tensor is generated from a list of coordinates: [[0, 1], [0, 2], [2, 0]]. A conversion to dense tensor generates:
                 # [ 0  1  1 ]
                 # [ 0  0  0 ]