Some Vulkan memory fixes and cleanup

src/gpu/vk/GrVkBuffer.cpp

Index: src/gpu/vk/GrVkBuffer.cpp
diff --git a/src/gpu/vk/GrVkBuffer.cpp b/src/gpu/vk/GrVkBuffer.cpp
index 5d2b5659f07a6bd4b1d2b1eb0dca3e1f3347e6c6..82674b4cfbfe04f6d6f29ee8988d9aacfd7a7c08 100644
--- a/src/gpu/vk/GrVkBuffer.cpp
+++ b/src/gpu/vk/GrVkBuffer.cpp
@@ -45,7 +45,9 @@ const GrVkBuffer::Resource* GrVkBuffer::Create(const GrVkGpu* gpu, const Desc& d
             bufInfo.usage = VK_BUFFER_USAGE_TRANSFER_DST_BIT;
             break;
     }
-    bufInfo.usage |= VK_BUFFER_USAGE_TRANSFER_DST_BIT;
+    if (!desc.fDynamic) {
+        bufInfo.usage |= VK_BUFFER_USAGE_TRANSFER_DST_BIT;
+    }
 
     bufInfo.sharingMode = VK_SHARING_MODE_EXCLUSIVE;
     bufInfo.queueFamilyIndexCount = 0;