drm/imx: directly call drm_put_dev in ->remove

Again no apparent user of the driver data field.

Cc: Sascha Hauer <s.hauer@pengutronix.de>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Dave Airlie <airlied@redhat.com>

drivers/staging/imx-drm/imx-drm-core.c

@@ -444,6 +444,8 @@ static int imx_drm_driver_load(struct drm_device *drm, unsigned long flags)
 	if (!imx_drm_device_get())
 		ret = -EINVAL;
 
+	platform_set_drvdata(drm->platformdev, drm);
+
 	ret = 0;
 
 err_init:
@@ -829,7 +831,7 @@ static int imx_drm_platform_probe(struct platform_device *pdev)
 
 static int imx_drm_platform_remove(struct platform_device *pdev)
 {
-	drm_platform_exit(&imx_drm_driver, pdev);
+	drm_put_dev(platform_get_drvdata(pdev));
 
 	return 0;
 }