IB/rxe: double free on error

[ Upstream commit ded260235308f340b979258a4c736e06ba12c747 ]

"goto err;" has it's own kfree_skb() call so it's a double free.  We
only need to free on the "goto exit;" path.

Fixes: 8700e3e7c485 ("Soft RoCE driver")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/infiniband/sw/rxe/rxe_req.c b/drivers/infiniband/sw/rxe/rxe_req.c
index 9d08478..5b0ca35 100644 (file)
--- a/drivers/infiniband/sw/rxe/rxe_req.c
+++ b/drivers/infiniband/sw/rxe/rxe_req.c
@@ -726,11 +726,11 @@ next_wqe:
        ret = rxe_xmit_packet(to_rdev(qp->ibqp.device), qp, &pkt, skb);
        if (ret) {
                qp->need_req_skb = 1;
-               kfree_skb(skb);
 
                rollback_state(wqe, qp, &rollback_wqe, rollback_psn);
 
                if (ret == -EAGAIN) {
+                       kfree_skb(skb);
                        rxe_run_task(&qp->req.task, 1);
                        goto exit;
                }