leds: is31fl32xx: Fix missing error code in is31fl32xx_parse_dt()

stable inclusion
from stable-5.10.65
commit c391728c9b25e51a352a65562ae78dde3b11b6e0
bugzilla: 182361 https://gitee.com/openeuler/kernel/issues/I4EH3U

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=c391728c9b25e51a352a65562ae78dde3b11b6e0

--------------------------------

[ Upstream commit e6421975 ]

The error code is missing in this code scenario, add the error code
'-EINVAL' to the return value 'ret'.

Eliminate the follow smatch warning:

drivers/leds/leds-is31fl32xx.c:388 is31fl32xx_parse_dt() warn: missing
error code 'ret'.
Reported-by: NAbaci Robot <abaci@linux.alibaba.com>
Signed-off-by: NJiapeng Chong <jiapeng.chong@linux.alibaba.com>
Fixes: 9d7cffaf ("leds: Add driver for the ISSI IS31FL32xx family of LED controllers")
Acked-by: NDavid Rivshin <drivshin@allworx.com>
Signed-off-by: NPavel Machek <pavel@ucw.cz>
Signed-off-by: NSasha Levin <sashal@kernel.org>
Signed-off-by: NChen Jun <chenjun102@huawei.com>
Acked-by: NWeilong Chen <chenweilong@huawei.com>
Signed-off-by: NChen Jun <chenjun102@huawei.com>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>

drivers/leds/leds-is31fl32xx.c

@@ -385,6 +385,7 @@ static int is31fl32xx_parse_dt(struct device *dev,
 			dev_err(dev,
 				"Node %pOF 'reg' conflicts with another LED\n",
 				child);
+			ret = -EINVAL;
 			goto err;
 		}