[PATCH AUTOSEL 4.19 098/146] RDMA/cm: Respect returned status of cm_init_av_by_path

[Sasha Levin]

From: Leon Romanovsky <leonro@xxxxxxxxxxxx>

[ Upstream commit e54b6a3bcd1ec972b25a164bdf495d9e7120b107 ]

Add missing check for failure of cm_init_av_by_path

Fixes: e1444b5a163e ("IB/cm: Fix automatic path migration support")
Reported-by: Slava Shwartsman <slavash@xxxxxxxxxxxx>
Reviewed-by: Parav Pandit <parav@xxxxxxxxxxxx>
Signed-off-by: Leon Romanovsky <leonro@xxxxxxxxxxxx>
Signed-off-by: Jason Gunthorpe <jgg@xxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 drivers/infiniband/core/cm.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/drivers/infiniband/core/cm.c b/drivers/infiniband/core/cm.c
index 6e39c27dca8e..4c533275d1f2 100644
--- a/drivers/infiniband/core/cm.c
+++ b/drivers/infiniband/core/cm.c
@@ -3292,8 +3292,11 @@ static int cm_lap_handler(struct cm_work *work)
 	if (ret)
 		goto unlock;
 
-	cm_init_av_by_path(param->alternate_path, NULL, &cm_id_priv->alt_av,
-			   cm_id_priv);
+	ret = cm_init_av_by_path(param->alternate_path, NULL,
+				 &cm_id_priv->alt_av, cm_id_priv);
+	if (ret)
+		goto unlock;
+
 	cm_id_priv->id.lap_state = IB_CM_LAP_RCVD;
 	cm_id_priv->tid = lap_msg->hdr.tid;
 	ret = atomic_inc_and_test(&cm_id_priv->work_count);
-- 
2.17.1