[PATCH] rtnetlink: Fix an error handling path in rtnl_newlink()

[Christophe JAILLET]

When some code has been moved in the commit in Fixes, some "return err;"
have correctly been changed in goto <some_where_in_the_error_handling_path>
but this one was missed.

Should "ops->maxtype > RTNL_MAX_TYPE" happen, then some resources would
leak.

Go through the error handling path to fix these leaks.

Fixes: 0d3008d1a9ae ("rtnetlink: Move ops->validate to rtnl_newlink().")
Signed-off-by: Christophe JAILLET <christophe.jaillet@xxxxxxxxxx>
---
Compile tested only
---
 net/core/rtnetlink.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c
index 194a81e5f608..e269fae2b579 100644
--- a/net/core/rtnetlink.c
+++ b/net/core/rtnetlink.c
@@ -3829,8 +3829,10 @@ static int rtnl_newlink(struct sk_buff *skb, struct nlmsghdr *nlh,
 	}
 
 	if (ops) {
-		if (ops->maxtype > RTNL_MAX_TYPE)
-			return -EINVAL;
+		if (ops->maxtype > RTNL_MAX_TYPE) {
+			ret = -EINVAL;
+			goto put_ops;
+		}
 
 		if (ops->maxtype && linkinfo[IFLA_INFO_DATA]) {
 			ret = nla_parse_nested_deprecated(tbs->attr, ops->maxtype,
-- 
2.47.0