net: dsa: sja1105: fix memory leak in sja1105_setup_devlink_regions()

stable inclusion
from stable-v5.10.159
commit 4be43e46c3f945fc7dd9e23c73a7a66927a3b814
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I7NTXH

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=4be43e46c3f945fc7dd9e23c73a7a66927a3b814

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

[ Upstream commit 78a9ea43 ]

When dsa_devlink_region_create failed in sja1105_setup_devlink_regions(),
priv->regions is not released.

Fixes: bf425b82 ("net: dsa: sja1105: expose static config as devlink region")
Signed-off-by: NZhengchao Shao <shaozhengchao@huawei.com>
Reviewed-by: NVladimir Oltean <olteanv@gmail.com>
Reviewed-by: NFlorian Fainelli <f.fainelli@gmail.com>
Link: https://lore.kernel.org/r/20221205012132.2110979-1-shaozhengchao@huawei.comSigned-off-by: NJakub Kicinski <kuba@kernel.org>
Signed-off-by: NSasha Levin <sashal@kernel.org>
Signed-off-by: Nsanglipeng <sanglipeng1@jd.com>

drivers/net/dsa/sja1105/sja1105_devlink.c

@@ -95,6 +95,8 @@ static int sja1105_setup_devlink_regions(struct dsa_switch *ds)
 		if (IS_ERR(region)) {
 			while (--i >= 0)
 				dsa_devlink_region_destroy(priv->regions[i]);
+
+			kfree(priv->regions);
 			return PTR_ERR(region);
 		}