Subject: [PATCH 17/31] nfp: abm: fix a memory leak bug

From: Qiushi Wu <[email-masked]>
Date: Sat, 2 May 2020 17:42:59 -0500

[ Upstream commit bd4af432cc71b5fbfe4833510359a6ad3ada250d ]

In function nfp_abm_vnic_set_mac, pointer nsp is allocated by nfp_nsp_open.
But when nfp_nsp_has_hwinfo_lookup fail, the pointer is not released,
which can lead to a memory leak bug. Fix this issue by adding
nfp_nsp_close(nsp) in the error path.

Fixes: f6e71efdf9fb1 ("nfp: abm: look up MAC addresses via management FW")
Signed-off-by: Qiushi Wu <[email-masked]>
Acked-by: Jakub Kicinski <[email-masked]>
Signed-off-by: David S. Miller <[email-masked]>
---
 drivers/net/ethernet/netronome/nfp/abm/main.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/ethernet/netronome/nfp/abm/main.c b/drivers/net/ethernet/netronome/nfp/abm/main.c
index 9183b3e85d21..354efffac0f9 100644
--- a/drivers/net/ethernet/netronome/nfp/abm/main.c
+++ b/drivers/net/ethernet/netronome/nfp/abm/main.c
@@ -283,6 +283,7 @@ nfp_abm_vnic_set_mac(struct nfp_pf *pf, struct nfp_abm *abm, struct nfp_net *nn,
 	if (!nfp_nsp_has_hwinfo_lookup(nsp)) {
 		nfp_warn(pf->cpp, "NSP doesn't support PF MAC generation\n");
 		eth_hw_addr_random(nn->dp.netdev);
+		nfp_nsp_close(nsp);
 		return;
 	}
 
-- 
2.26.2