drm/panfrost: simplify the return expression of cz_ih_hw_init()

Simplify the return expression.
Signed-off-by: Qinglang Miao <miaoqinglang@huawei.com>
Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>
Reviewed-by: Steven Price <steven.price@arm.com>
Signed-off-by: Steven Price <steven.price@arm.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200921131019.91558-1-miaoqinglang@huawei.com

drivers/gpu/drm/panfrost/panfrost_device.c

@@ -18,19 +18,13 @@
 
 static int panfrost_reset_init(struct panfrost_device *pfdev)
 {
-	int err;
-
 	pfdev->rstc = devm_reset_control_array_get(pfdev->dev, false, true);
 	if (IS_ERR(pfdev->rstc)) {
 		dev_err(pfdev->dev, "get reset failed %ld\n", PTR_ERR(pfdev->rstc));
 		return PTR_ERR(pfdev->rstc);
 	}
 
-	err = reset_control_deassert(pfdev->rstc);
-	if (err)
-		return err;
-
-	return 0;
+	return reset_control_deassert(pfdev->rstc);
 }
 
 static void panfrost_reset_fini(struct panfrost_device *pfdev)