Fix issue that failed to load Conv node with external initializer (#2…

…0042)

### Description
Fix issue that failed to load Conv node with external initializer.
Root cause the model path is not provided while loading the weight and
bias tensor for Conv.

onnxruntime/core/providers/qnn/builder/opbuilder/base_op_builder.cc

@@ -244,7 +244,9 @@ Status BaseOpBuilder::TransposeInitializer(const QnnModelWrapper& qnn_model_wrap
 
   TensorShape new_tensor_shape(new_tensor_shape_dims);
   Tensor out_tensor = Tensor(tensor_dtype, new_tensor_shape, cpu_allocator);
-  ORT_RETURN_IF_ERROR(onnxruntime::utils::TensorProtoToTensor(Env::Default(), nullptr, initializer, in_tensor));
+  onnxruntime::PathString model_path = qnn_model_wrapper.GetGraphViewer().ModelPath().ToPathString();
+  const ORTCHAR_T* model_path_str = model_path.empty() ? nullptr : model_path.c_str();
+  ORT_RETURN_IF_ERROR(onnxruntime::utils::TensorProtoToTensor(Env::Default(), model_path_str, initializer, in_tensor));
   ORT_RETURN_IF_ERROR(Transpose::DoTranspose(permutations, in_tensor, out_tensor));
   onnx::TensorProto new_tensor_proto = onnxruntime::utils::TensorToTensorProto(out_tensor, "test");
   ORT_RETURN_IF_ERROR(qnn_model_wrapper.UnpackInitializerData(new_tensor_proto, transposed_data));

onnxruntime/test/providers/qnn/qnn_basic_test.cc

@@ -168,6 +168,26 @@ TEST(QnnEP, TestDisableCPUFallback_ConflictingConfig) {
   }
 }
 
+// Conv node `Conv` is not supported: GetFileLength for conv_qdq_external_ini.bin failed:open file conv_qdq_external_ini.bin fail,
+// errcode = 2 - The system cannot find the file specified.
+TEST_F(QnnHTPBackendTests, TestConvWithExternalData) {
+  Ort::SessionOptions so;
+  onnxruntime::ProviderOptions options;
+#if defined(_WIN32)
+  options["backend_path"] = "QnnHtp.dll";
+#else
+  options["backend_path"] = "libQnnHtp.so";
+#endif
+
+  so.AppendExecutionProvider("QNN", options);
+
+  Ort::Status status(OrtSessionOptionsAppendExecutionProvider_CPU(so, 1));
+
+  const ORTCHAR_T* ort_model_path = ORT_MODEL_FOLDER "conv_qdq_external_ini.onnx";
+
+  Ort::Session session(*ort_env, ort_model_path, so);
+}
+
 // Helper function that runs an ONNX model with a NHWC Resize operator to test that
 // type/shape inference succeeds during layout transformation.
 // Refer to onnxruntime/core/graph/contrib_ops/nhwc_inference_context.h.