[PATCH 4.19 401/639] net: hns3: fix a memory leak issue for hclge_map_unmap_ring_to_vf_vector

[Greg Kroah-Hartman]

From: Huazhong Tan <tanhuazhong@xxxxxxxxxx>

[ Upstream commit 49f971bd308571fe466687227130a7082b662d0e ]

When hclge_bind_ring_with_vector() fails,
hclge_map_unmap_ring_to_vf_vector() returns the error
directly, so nobody will free the memory allocated by
hclge_get_ring_chain_from_mbx().

So hclge_free_vector_ring_chain() should be called no matter
hclge_bind_ring_with_vector() fails or not.

Fixes: 84e095d64ed9 ("net: hns3: Change PF to add ring-vect binding & resetQ to mailbox")
Signed-off-by: Huazhong Tan <tanhuazhong@xxxxxxxxxx>
Signed-off-by: Peng Li <lipeng321@xxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_mbx.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_mbx.c b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_mbx.c
index e08e82020402a..997ca79ed892b 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_mbx.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_mbx.c
@@ -181,12 +181,10 @@ static int hclge_map_unmap_ring_to_vf_vector(struct hclge_vport *vport, bool en,
 		return ret;
 
 	ret = hclge_bind_ring_with_vector(vport, vector_id, en, &ring_chain);
-	if (ret)
-		return ret;
 
 	hclge_free_vector_ring_chain(&ring_chain);
 
-	return 0;
+	return ret;
 }
 
 static int hclge_set_vf_promisc_mode(struct hclge_vport *vport,
-- 
2.20.1