avcodec/mpegvideo: Use "goto fail" for all error paths in ff_mpv_common_frame_size_change()

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

libavcodec/mpegvideo.c

@@ -1485,7 +1485,7 @@ int ff_mpv_common_frame_size_change(MpegEncContext *s)
 
     if ((s->width || s->height) &&
         av_image_check_size(s->width, s->height, 0, s->avctx))
-        return AVERROR_INVALIDDATA;
+        goto fail;
 
     if ((err = init_context_frame(s)))
         goto fail;