avformat/mov: fix av_freep for dovi pointer

Reviewed-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
Signed-off-by: Limin Wang <lance.lmwang@gmail.com>

libavformat/mov.c

@@ -6827,7 +6827,7 @@ static int mov_read_dvcc_dvvc(MOVContext *c, AVIOContext *pb, MOVAtom atom)
     ret = av_stream_add_side_data(st, AV_PKT_DATA_DOVI_CONF,
                                   (uint8_t *)dovi, dovi_size);
     if (ret < 0) {
-        av_freep(dovi);
+        av_free(dovi);
         return ret;
     }