Stop assuming anything about result of MFStartup()

media/gpu/media_foundation_video_encode_accelerator_win.cc

Index: media/gpu/media_foundation_video_encode_accelerator_win.cc
diff --git a/media/gpu/media_foundation_video_encode_accelerator_win.cc b/media/gpu/media_foundation_video_encode_accelerator_win.cc
index 050dfb77043fa5e3fbaf2f141f95563166737f7e..08772c0728e7c2c6783320e9a1dc7ff0fdd66611 100644
--- a/media/gpu/media_foundation_video_encode_accelerator_win.cc
+++ b/media/gpu/media_foundation_video_encode_accelerator_win.cc
@@ -337,7 +337,8 @@ bool MediaFoundationVideoEncodeAccelerator::CreateHardwareEncoderMFT() {
     }
   }
 
-  InitializeMediaFoundation();
+  if (!InitializeMediaFoundation())
+    return false;
 
   uint32_t flags = MFT_ENUM_FLAG_HARDWARE | MFT_ENUM_FLAG_SORTANDFILTER;
   MFT_REGISTER_TYPE_INFO input_info;