3.19-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Majd Dibbiny <[email protected]>

commit bede98e781747623ae170667694a71ef19c6ba7f upstream.

In case handle_eth_ud_smac_index fails, we need to free the allocated resources.

Fixes: 2f5bb473681b ("mlx4: Add ref counting to port MAC table for RoCE")
Signed-off-by: Majd Dibbiny <[email protected]>
Signed-off-by: Or Gerlitz <[email protected]>
Signed-off-by: Roland Dreier <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>

---
 drivers/infiniband/hw/mlx4/qp.c |    6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

--- a/drivers/infiniband/hw/mlx4/qp.c
+++ b/drivers/infiniband/hw/mlx4/qp.c
@@ -1674,8 +1674,10 @@ static int __mlx4_ib_modify_qp(struct ib
                            qp->mlx4_ib_qp_type == MLX4_IB_QPT_PROXY_GSI ||
                            qp->mlx4_ib_qp_type == MLX4_IB_QPT_TUN_GSI) {
                                err = handle_eth_ud_smac_index(dev, qp, (u8 
*)attr->smac, context);
-                               if (err)
-                                       return -EINVAL;
+                               if (err) {
+                                       err = -EINVAL;
+                                       goto out;
+                               }
                                if (qp->mlx4_ib_qp_type == 
MLX4_IB_QPT_PROXY_GSI)
                                        dev->qp1_proxy[qp->port - 1] = qp;
                        }


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