Fixed memory blob (#4338)

* Fixed memory blob

* Fixed code style
Co-authored-by: Sang Ik Lee <sang.ik.lee@intel.com>

test/util/backend_utils.cpp

@@ -35,9 +35,9 @@ Blob::Ptr fill_blob(SizeVector shape, std::vector<float> data)
     case 5: layout = Layout::NCDHW; break;
     default: THROW_IE_EXCEPTION << "Can't convert dims " << shape.size() << " to Layout!";
     }
-    Blob::Ptr blob(new TBlob<float>({Precision::FP32, shape, layout}));
+    MemoryBlob::Ptr blob(new TBlob<float>({Precision::FP32, shape, layout}));
     blob->allocate();
-    float* blob_ptr = (float*)(void*)blob->buffer();
+    float* blob_ptr = blob->rwmap().as<float*>();
     for (int i = 0; i < data.size(); i++)
     {
         blob_ptr[i] = data[i];

test/util/backend_utils.hpp

@@ -144,7 +144,15 @@ namespace ngraph
                 inferRequest.Infer();
                 InferenceEngine::Blob::Ptr output = inferRequest.GetBlob(output_name);
 
-                float* output_ptr = output->buffer().as<float*>();
+                InferenceEngine::MemoryBlob::Ptr moutput =
+                    InferenceEngine::as<InferenceEngine::MemoryBlob>(output);
+                if (!moutput)
+                {
+                    THROW_IE_EXCEPTION << "Cannot get output MemoryBlob in call_with_validate()";
+                }
+
+                auto lm = moutput->rmap();
+                float* output_ptr = lm.as<float*>();
                 // TODO: how to get size without explicit calculation?
                 size_t size = 1;
                 for (const auto& dim : output->getTensorDesc().getDims())