drm/tilcdc: call drm_put_dev directly from ->remove

tilcdc already stores the drm_device in the driver data pointer. So
use that.

Cc: Rob Clark <robdclark@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Reviewed-by: Rob Clark <robdclark@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
diff --git a/drivers/gpu/drm/tilcdc/tilcdc_drv.c b/drivers/gpu/drm/tilcdc/tilcdc_drv.c
index 116da19..e6d77d0 100644
--- a/drivers/gpu/drm/tilcdc/tilcdc_drv.c
+++ b/drivers/gpu/drm/tilcdc/tilcdc_drv.c
@@ -594,7 +594,7 @@
 
 static int tilcdc_pdev_remove(struct platform_device *pdev)
 {
-	drm_platform_exit(&tilcdc_driver, pdev);
+	drm_put_dev(platform_get_drvdata(pdev));
 
 	return 0;
 }