team: Fix double free in error path

The __send_and_alloc_skb() receives a skb ptr as a parameter but in
case it fails the skb is not valid:
- Send failed and released the skb internally.
- Allocation failed.

The current code tries to release the skb in case of failure which
causes redundant freeing.

Fixes: 9b00cf2 ("team: implement multipart netlink messages for options transfers")
Signed-off-by: Arkadi Sharshevsky <arkadis@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Author: Arkadi Sharshevsky

drivers/net/team/team.c

@@ -2395,7 +2395,7 @@ static int team_nl_send_options_get(struct team *team, u32 portid, u32 seq,
 	if (!nlh) {
 		err = __send_and_alloc_skb(&skb, team, portid, send_func);
 		if (err)
-			goto errout;
+			return err;
 		goto send_done;
 	}
 
@@ -2681,7 +2681,7 @@ static int team_nl_send_port_list_get(struct team *team, u32 portid, u32 seq,
 	if (!nlh) {
 		err = __send_and_alloc_skb(&skb, team, portid, send_func);
 		if (err)
-			goto errout;
+			return err;
 		goto send_done;
 	}