[dpdk-dev] [PATCH] net/mlx5: fix invalid error check

[Adrien Mazarguil]

Since its return type is unsigned, if_nametoindex() returns 0 in case of
error, never -1.

Fixes: ccdcba53a3f4 ("net/mlx5: use Netlink to add/remove MAC addresses")
Cc: Nelio Laranjeiro <nelio.laranjeiro at 6wind.com>
Cc: stable at dpdk.org

Signed-off-by: Adrien Mazarguil <adrien.mazarguil at 6wind.com>
---
 drivers/net/mlx5/mlx5_ethdev.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/mlx5/mlx5_ethdev.c b/drivers/net/mlx5/mlx5_ethdev.c
index 90488af33..ebe5cb6e3 100644
--- a/drivers/net/mlx5/mlx5_ethdev.c
+++ b/drivers/net/mlx5/mlx5_ethdev.c
@@ -192,13 +192,13 @@ int
 mlx5_ifindex(const struct rte_eth_dev *dev)
 {
 	char ifname[IF_NAMESIZE];
-	int ret;
+	unsigned int ret;
 
 	ret = mlx5_get_ifname(dev, &ifname);
 	if (ret)
 		return ret;
 	ret = if_nametoindex(ifname);
-	if (ret == -1) {
+	if (ret == 0) {
 		rte_errno = errno;
 		return -rte_errno;
 	}
-- 
2.11.0