[PKTGEN]: Fix double unlock of xfrm_state->lock

The pktgen_output_ipsec() function can unlock this lock twice
due to merged error and plain paths. Remove one of the calls
to spin_unlock.

Other possible solution would be to place "return 0" right
after the first unlock, but at this place the err is known
to be 0, so these solutions are the same except for this one
makes the code shorter.

Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/core/pktgen.c b/net/core/pktgen.c
index de33f36947e9064294085e6f775881b98a636a8a..285ec3ed9b378179248b8d8900ad983c9ee0f210 100644 (file)
--- a/net/core/pktgen.c
+++ b/net/core/pktgen.c
@@ -2463,8 +2463,6 @@ static int pktgen_output_ipsec(struct sk_buff *skb, struct pktgen_dev *pkt_dev)
 
        x->curlft.bytes +=skb->len;
        x->curlft.packets++;
-       spin_unlock(&x->lock);
-
 error:
        spin_unlock(&x->lock);
        return err;