Fix onnx export device issue

Signed-off-by: Jael Gu <mengjia.gu@zilliz.com>

timm_image.py

@@ -166,7 +166,7 @@ class TimmImage(NNOperator):
                 path = path + '.onnx'
             else:
                 raise AttributeError(f'Invalid format {format}.')
-        dummy_input = torch.rand((1,) + self.config['input_size'])
+        dummy_input = torch.rand((1,) + self.config['input_size']).to(self.device)
         if format == 'pytorch':
             torch.save(self._model, path)
         elif format == 'torchscript':