gpu: host1x: Initialize syncval in channel_submit()

During the refactoring of channel_submit(), assignment of syncval was
moved but it is also used in channel_submit(). Add this assignment back
to channel_submit() as well.
Signed-off-by: Mikko Perttunen <mperttunen@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>

drivers/gpu/host1x/hw/channel_hw.c

@@ -319,6 +319,7 @@ static int channel_submit(struct host1x_job *job)
 	}
 
 	channel_program_cdma(job);
+	syncval = host1x_syncpt_read_max(sp);
 
 	/* end CDMA submit & stash pinned hMems into sync queue */
 	host1x_cdma_end(&ch->cdma, job);