drm/radeon/kms: do not disable audio engine twice

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

drivers/gpu/drm/radeon/r600_audio.c

@@ -270,7 +270,6 @@ void r600_audio_fini(struct radeon_device *rdev)
 		return;
 
 	del_timer(&rdev->audio_timer);
-	WREG32_P(R600_AUDIO_ENABLE, 0x0, ~0x81000000);
 
 	r600_audio_engine_enable(rdev, false);
 }