[XFRM] xfrm_user: Fix return values of xfrm_add_sa_expire.

As noted by Kent Yoder, this function will always return an
error.  Make sure it returns zero on success.

Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/xfrm/xfrm_user.c b/net/xfrm/xfrm_user.c
index 2567453..924a2fe 100644 (file)
--- a/net/xfrm/xfrm_user.c
+++ b/net/xfrm/xfrm_user.c
@@ -1557,14 +1557,13 @@ static int xfrm_add_sa_expire(struct sk_buff *skb, struct nlmsghdr *nlh,
        struct xfrm_usersa_info *p = &ue->state;
 
        x = xfrm_state_lookup(&p->id.daddr, p->id.spi, p->id.proto, p->family);
-               err = -ENOENT;
 
+       err = -ENOENT;
        if (x == NULL)
                return err;
 
-       err = -EINVAL;
-
        spin_lock_bh(&x->lock);
+       err = -EINVAL;
        if (x->km.state != XFRM_STATE_VALID)
                goto out;
        km_state_expired(x, ue->hard, current->pid);
@@ -1574,6 +1573,7 @@ static int xfrm_add_sa_expire(struct sk_buff *skb, struct nlmsghdr *nlh,
                xfrm_audit_log(NETLINK_CB(skb).loginuid, NETLINK_CB(skb).sid,
                               AUDIT_MAC_IPSEC_DELSA, 1, NULL, x);
        }
+       err = 0;
 out:
        spin_unlock_bh(&x->lock);
        xfrm_state_put(x);