bnx2x: unlock before returning an error

We introduced a new return here but forgot to drop the lock.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Dmitry Kravkov <dmitry@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/broadcom/bnx2x/bnx2x_sp.c

@@ -1836,6 +1836,7 @@ static int bnx2x_vlan_mac_del_all(struct bnx2x *bp,
 			rc = exeq->remove(bp, exeq->owner, exeq_pos);
 			if (rc) {
 				BNX2X_ERR("Failed to remove command\n");
+				spin_unlock_bh(&exeq->lock);
 				return rc;
 			}
 			list_del(&exeq_pos->link);