Fix vulkan onGetWritePixelsInfo

src/gpu/vk/GrVkGpu.cpp

Index: src/gpu/vk/GrVkGpu.cpp
diff --git a/src/gpu/vk/GrVkGpu.cpp b/src/gpu/vk/GrVkGpu.cpp
index ca6ccde67a7166c5f86c45f5015801baab9f0480..e5d24fc5806ff8044a55da6416b311f9c9bcb8f3 100644
--- a/src/gpu/vk/GrVkGpu.cpp
+++ b/src/gpu/vk/GrVkGpu.cpp
@@ -252,10 +252,6 @@ bool GrVkGpu::onGetWritePixelsInfo(GrSurface* dstSurface, int width, int height,
         return false;
     }
 
-    if (dstSurface->config() == srcConfig) {
-        return true;
-    }
-
     GrRenderTarget* renderTarget = dstSurface->asRenderTarget();
 
     // Start off assuming no swizzling
@@ -271,6 +267,10 @@ bool GrVkGpu::onGetWritePixelsInfo(GrSurface* dstSurface, int width, int height,
     tempDrawInfo->fTempSurfaceDesc.fSampleCnt = 0;
     tempDrawInfo->fTempSurfaceDesc.fOrigin = kTopLeft_GrSurfaceOrigin;
 
+    if (dstSurface->config() == srcConfig) {
+        return true;
+    }
+
     if (renderTarget && this->vkCaps().isConfigRenderable(renderTarget->config(), false)) {
         ElevateDrawPreference(drawPreference, kRequireDraw_DrawPreference);