video: fbdev: mmp: Make use of the helper function dev_err_probe()

When possible use dev_err_probe help to properly deal with the
PROBE_DEFER error, the benefit is that DEFER issue will be logged
in the devices_deferred debugfs file.
Using dev_err_probe() can reduce code size, and the error value
gets printed.
Signed-off-by: NCai Huoqing <caihuoqing@baidu.com>
Signed-off-by: NHelge Deller <deller@gmx.de>

drivers/video/fbdev/mmp/hw/mmp_ctrl.c

@@ -514,7 +514,8 @@ static int mmphw_probe(struct platform_device *pdev)
 	/* get clock */
 	ctrl->clk = devm_clk_get(ctrl->dev, mi->clk_name);
 	if (IS_ERR(ctrl->clk)) {
-		dev_err(ctrl->dev, "unable to get clk %s\n", mi->clk_name);
+		dev_err_probe(ctrl->dev, ret,
+			      "unable to get clk %s\n", mi->clk_name);
 		ret = -ENOENT;
 		goto failed;
 	}