Fix build error from diamond merge

Somehow between various merges on master and oc-dr1-dev
master ended up in bad state.
CL's involved are:
cd939aa6622430 Fix build for non-HWC2 targets (master)
281e8113d0ce Communicate composition buffer dataspace to HWC (oc-dr1-dev)
79d272442ce13 Communicate composition buffer dataspace to HWC (master)
I think 281e got merged into master and re-introduced the change that
was fixed by cd93.
Test: make

Change-Id: I087244348392098f516905eb1cebebf0362fcc20
(cherry picked from commit 6461806da8d8f0677ce337700153e5a972c36593)
diff --git a/services/surfaceflinger/DisplayHardware/FramebufferSurface.cpp b/services/surfaceflinger/DisplayHardware/FramebufferSurface.cpp
index 68d7a18..1ac21c6 100644
--- a/services/surfaceflinger/DisplayHardware/FramebufferSurface.cpp
+++ b/services/surfaceflinger/DisplayHardware/FramebufferSurface.cpp
@@ -173,16 +173,17 @@
     mHwcBufferCache.getHwcBuffer(mCurrentBufferSlot, mCurrentBuffer,
             &outSlot, &outBuffer);
     outDataspace = item.mDataSpace;
-#else
-    outBuffer = mCurrentBuffer;
-#endif
     status_t result =
             mHwc.setClientTarget(mDisplayType, outSlot, outFence, outBuffer, outDataspace);
     if (result != NO_ERROR) {
         ALOGE("error posting framebuffer: %d", result);
+        return result;
     }
+#else
+    outBuffer = mCurrentBuffer;
+#endif
 
-    return result;
+    return NO_ERROR;
 }
 
 #ifndef USE_HWC2