ipmi:ssif: Add check for kstrdup

Add check for the return value of kstrdup() and return the error
if it fails in order to avoid NULL pointer dereference.

Fixes: c4436c9 ("ipmi_ssif: avoid registering duplicate ssif interface")
Signed-off-by: Jiasheng Jiang <[email protected]>
Message-Id: <[email protected]>
Signed-off-by: Corey Minyard <[email protected]>

Author: JiangJias

drivers/char/ipmi/ipmi_ssif.c

@@ -1600,6 +1600,11 @@ static int ssif_add_infos(struct i2c_client *client)
 	info->addr_src = SI_ACPI;
 	info->client = client;
 	info->adapter_name = kstrdup(client->adapter->name, GFP_KERNEL);
+	if (!info->adapter_name) {
+		kfree(info);
+		return -ENOMEM;
+	}
+
 	info->binfo.addr = client->addr;
 	list_add_tail(&info->link, &ssif_infos);
 	return 0;