net: ehea: fix possible memory leak in ehea_register_port()

stable inclusion
from stable-v5.10.153
commit 3519b5ddac2109892c93a6ada7a3ec82e40d2273
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I64YCA

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=3519b5ddac2109892c93a6ada7a3ec82e40d2273

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

[ Upstream commit 0e7ce23a ]

If of_device_register() returns error, the of node and the
name allocated in dev_set_name() is leaked, call put_device()
to give up the reference that was set in device_initialize(),
so that of node is put in logical_port_release() and the name
is freed in kobject_cleanup().

Fixes: 1acf2318 ("ehea: dynamic add / remove port")
Signed-off-by: NYang Yingliang <yangyingliang@huawei.com>
Link: https://lore.kernel.org/r/20221025130011.1071357-1-yangyingliang@huawei.comSigned-off-by: NPaolo Abeni <pabeni@redhat.com>
Signed-off-by: NSasha Levin <sashal@kernel.org>
Signed-off-by: NLipeng Sang <sanglipeng1@jd.com>

drivers/net/ethernet/ibm/ehea/ehea_main.c

@@ -2897,6 +2897,7 @@ static struct device *ehea_register_port(struct ehea_port *port,
 	ret = of_device_register(&port->ofdev);
 	if (ret) {
 		pr_err("failed to register device. ret=%d\n", ret);
+		put_device(&port->ofdev.dev);
 		goto out;
 	}