unpatch for onnx

Author: eaidova

optimum/exporters/openvino/convert.py

@@ -385,6 +385,12 @@ def ts_patched_forward(*args, **kwargs):
                     "A stateless model will be exported instead. It may result in sub-optimal inference performance."
                     "Provide a model that can be converted to OpenVINO without fallback to ONNX conversion path."
                 )
+            
+            if patch_16bit_model:
+                from openvino.frontend.pytorch.patch_model import unpatch_model
+                unpatch_model(model, "_openvino_module_extension_patch_orig_forward")
+                model.to(torch.float32)
+
             return export_pytorch_via_onnx(
                 model,
                 config,