[PATCH v1 07/31] net/ntnic: add var definition transparently

[Serhii Iliushyk]

From: Danylo Vodopianov <dvo-plv at napatech.com>

set eth_base to NULL after freeing to prevent
use-after-free

CID: 446746 Use after free (USE_AFTER_FREE)

Coverity issue: 446746
Fixes: 1d3f62a0c4f1 ("net/ntnic: add base init and deinit of flow API")

Signed-off-by: Danylo Vodopianov <dvo-plv at napatech.com>
---
 drivers/net/ntnic/nthw/flow_api/flow_api.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ntnic/nthw/flow_api/flow_api.c b/drivers/net/ntnic/nthw/flow_api/flow_api.c
index 82d4e34ae9..d25d1a3dd1 100644
--- a/drivers/net/ntnic/nthw/flow_api/flow_api.c
+++ b/drivers/net/ntnic/nthw/flow_api/flow_api.c
@@ -385,8 +385,10 @@ static void flow_ndev_reset(struct flow_nic_dev *ndev)
 	}
 
 	/* Delete all eth-port devices created on this NIC device */
-	while (ndev->eth_base)
+	while (ndev->eth_base) {
 		flow_delete_eth_dev(ndev->eth_base);
+		ndev->eth_base = NULL;
+	}
 
 	/* Error check */
 	while (ndev->flow_base) {
-- 
2.45.0