diffusers

14725164 - fix "Expected all tensors to be on the same device, but found at least two devices" error (#11690)

fix "Expected all tensors to be on the same device, but found at least two devices" error (#11690) * xx * fix Signed-off-by: YAO Matrix <matrix.yao@intel.com> * Update model_loading_utils.py * Update test_models_unet_2d_condition.py * Update test_models_unet_2d_condition.py * fix style Signed-off-by: YAO Matrix <matrix.yao@intel.com> * fix comments Signed-off-by: Matrix Yao <matrix.yao@intel.com> * Update unet_2d_blocks.py * update Signed-off-by: Matrix Yao <matrix.yao@intel.com> --------- Signed-off-by: YAO Matrix <matrix.yao@intel.com> Signed-off-by: Matrix Yao <matrix.yao@intel.com> Co-authored-by: Sayak Paul <spsayakpaul@gmail.com>