[PATCH 2/3] openvswitch: Release rtnl_lock if ovs_vport_cmd_build_info() failed.

[Jesse Gross <jesse-l0M0P4e3n4LQT0dZR+AlfA@public.gmane.org>]

From: Ansis Atteka <aatteka-l0M0P4e3n4LQT0dZR+AlfA@public.gmane.org>

This patch fixes a possible lock-up bug where rtnl_lock might not
get released.

Signed-off-by: Ansis Atteka <aatteka-l0M0P4e3n4LQT0dZR+AlfA@public.gmane.org>
Signed-off-by: Jesse Gross <jesse-l0M0P4e3n4LQT0dZR+AlfA@public.gmane.org>
---
 net/openvswitch/datapath.c |    5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/net/openvswitch/datapath.c b/net/openvswitch/datapath.c
index e44e631..4cb615d 100644
--- a/net/openvswitch/datapath.c
+++ b/net/openvswitch/datapath.c
@@ -1641,10 +1641,9 @@ static int ovs_vport_cmd_set(struct sk_buff *skb, struct genl_info *info)
 	reply = ovs_vport_cmd_build_info(vport, info->snd_pid, info->snd_seq,
 					 OVS_VPORT_CMD_NEW);
 	if (IS_ERR(reply)) {
-		err = PTR_ERR(reply);
 		netlink_set_err(init_net.genl_sock, 0,
-				ovs_dp_vport_multicast_group.id, err);
-		return 0;
+				ovs_dp_vport_multicast_group.id, PTR_ERR(reply));
+		goto exit_unlock;
 	}
 
 	genl_notify(reply, genl_info_net(info), info->snd_pid,
-- 
1.7.9.5