Subject: [PATCH AUTOSEL 5.3 65/71] nfp: flower: prevent memory leak in nfp_flower_spawn_phy_reprs

From: Sasha Levin <[email-masked]>
Date: Tue, 1 Oct 2019 12:39:15 -0400

From: Navid Emamdoost <[email-masked]>

[ Upstream commit 8572cea1461a006bce1d06c0c4b0575869125fa4 ]

In nfp_flower_spawn_phy_reprs, in the for loop over eth_tbl if any of
intermediate allocations or initializations fail memory is leaked.
requiered releases are added.

Fixes: b94524529741 ("nfp: flower: add per repr private data for LAG offload")
Signed-off-by: Navid Emamdoost <[email-masked]>
Acked-by: Jakub Kicinski <[email-masked]>
Signed-off-by: David S. Miller <[email-masked]>
Signed-off-by: Sasha Levin <[email-masked]>
---
 drivers/net/ethernet/netronome/nfp/flower/main.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/net/ethernet/netronome/nfp/flower/main.c b/drivers/net/ethernet/netronome/nfp/flower/main.c
index 5331e01f373e0..acb02e1513f2e 100644
--- a/drivers/net/ethernet/netronome/nfp/flower/main.c
+++ b/drivers/net/ethernet/netronome/nfp/flower/main.c
@@ -518,6 +518,7 @@ nfp_flower_spawn_phy_reprs(struct nfp_app *app, struct nfp_flower_priv *priv)
 		repr_priv = kzalloc(sizeof(*repr_priv), GFP_KERNEL);
 		if (!repr_priv) {
 			err = -ENOMEM;
+			nfp_repr_free(repr);
 			goto err_reprs_clean;
 		}
 
@@ -528,11 +529,13 @@ nfp_flower_spawn_phy_reprs(struct nfp_app *app, struct nfp_flower_priv *priv)
 		port = nfp_port_alloc(app, NFP_PORT_PHYS_PORT, repr);
 		if (IS_ERR(port)) {
 			err = PTR_ERR(port);
+			kfree(repr_priv);
 			nfp_repr_free(repr);
 			goto err_reprs_clean;
 		}
 		err = nfp_port_init_phy_port(app->pf, app, port, i);
 		if (err) {
+			kfree(repr_priv);
 			nfp_port_free(port);
 			nfp_repr_free(repr);
 			goto err_reprs_clean;
@@ -545,6 +548,7 @@ nfp_flower_spawn_phy_reprs(struct nfp_app *app, struct nfp_flower_priv *priv)
 		err = nfp_repr_init(app, repr,
 				    cmsg_port_id, port, priv->nn->dp.netdev);
 		if (err) {
+			kfree(repr_priv);
 			nfp_port_free(port);
 			nfp_repr_free(repr);
 			goto err_reprs_clean;
-- 
2.20.1