NVFlinger: Do the microprofile Flip after processing a valid frame.

src/core/hle/service/nvflinger/nvflinger.cpp

@@ -191,8 +191,6 @@ void NVFlinger::Compose() {
         // Search for a queued buffer and acquire it
         auto buffer = buffer_queue.AcquireBuffer();
 
-        MicroProfileFlip();
-
         if (!buffer) {
             continue;
         }
@@ -206,6 +204,8 @@ void NVFlinger::Compose() {
             gpu.WaitFence(fence.id, fence.value);
         }
 
+        MicroProfileFlip();
+
         // Now send the buffer to the GPU for drawing.
         // TODO(Subv): Support more than just disp0. The display device selection is probably based
         // on which display we're drawing (Default, Internal, External, etc)