IB/mthca: Initialize grh_present before using it

build_mlx_header() was using sqp->ud_header.grh_present before it was
initialized by mthca_read_ah().  Furthermore, header->grh_present is
set by ib_ud_header_init, so there's no need to set it again in
mthca_read_ah().

Signed-off-by: Michael S. Tsirkin <mst@mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/infiniband/hw/mthca/mthca_qp.c b/drivers/infiniband/hw/mthca/mthca_qp.c
index 564b6d51c394..fba608ed7df2 100644
--- a/drivers/infiniband/hw/mthca/mthca_qp.c
+++ b/drivers/infiniband/hw/mthca/mthca_qp.c
@@ -1434,7 +1434,7 @@ static int build_mlx_header(struct mthca_dev *dev, struct mthca_sqp *sqp,
         u16 pkey;
 
         ib_ud_header_init(256, /* assume a MAD */
-                          sqp->ud_header.grh_present,
+                          mthca_ah_grh_present(to_mah(wr->wr.ud.ah)),
                           &sqp->ud_header);
 
         err = mthca_read_ah(dev, to_mah(wr->wr.ud.ah), &sqp->ud_header);