[PATCH 5.2 49/56] rocker: fix memory leaks of fib_work on two error return paths

[Greg Kroah-Hartman <gregkh@linuxfoundation.org>]

From: Colin Ian King <colin.king@canonical.com>

[ Upstream commit 011f175428d46461f94a65dacb9a416529d08dda ]

Currently there are two error return paths that leak memory allocated
to fib_work. Fix this by kfree'ing fib_work before returning.

Addresses-Coverity: ("Resource leak")
Fixes: 19a9d136f198 ("ipv4: Flag fib_info with a fib_nh using IPv6 gateway")
Fixes: dbcc4fa718ee ("rocker: Fail attempts to use routes with nexthop objects")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Reviewed-by: David Ahern <dsahern@gmail.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/net/ethernet/rocker/rocker_main.c |    1 +
 1 file changed, 1 insertion(+)

--- a/drivers/net/ethernet/rocker/rocker_main.c
+++ b/drivers/net/ethernet/rocker/rocker_main.c
@@ -2208,6 +2208,7 @@ static int rocker_router_fib_event(struc
 
 			if (fen_info->fi->fib_nh_is_v6) {
 				NL_SET_ERR_MSG_MOD(info->extack, "IPv6 gateway with IPv4 route is not supported");
+				kfree(fib_work);
 				return notifier_from_errno(-EINVAL);
 			}
 		}