drm/vc4: Correct logic on stopping an HVS channel
When factoring out __vc4_hvs_stop_channel, the logic got inverted from
if (condition)
// stop channel
to
if (condition)
goto out
//stop channel
out:
and also changed the exact register writes used to stop the channel.
Correct the logic so that the channel is actually stopped, and revert
to the original register writes.
Fixes:
6d01a106b4c8 ("drm/vc4: crtc: Move HVS init and close to a function")
Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>