net/virtio: fix memory leak on failure

In function eth_virtio_dev_init(), dynamic memory stored
in "eth_dev->data->mac_addrs" variable and it is not freed
when function return,
this is a possible memory leak.

Fixes: 8ced1542f7a3 ("net/virtio: eth_dev->data->mac_addrs is not freed")
Cc: stable@dpdk.org
Signed-off-by: Pengzhen Liu <liupengzhen3@huawei.com>
Acked-by: Yuanhan Liu <yliu@fridaylinux.org>

diff --git a/drivers/net/virtio/virtio_ethdev.c b/drivers/net/virtio/virtio_ethdev.c
index 87ac2be..e0328f6 100644 (file)
--- a/drivers/net/virtio/virtio_ethdev.c
+++ b/drivers/net/virtio/virtio_ethdev.c
@@ -1620,13 +1620,13 @@ eth_virtio_dev_init(struct rte_eth_dev *eth_dev)
        if (!hw->virtio_user_dev) {
                ret = vtpci_init(RTE_ETH_DEV_TO_PCI(eth_dev), hw);
                if (ret)
-                       return ret;
+                       goto out;
        }
 
        /* reset device and negotiate default features */
        ret = virtio_init_device(eth_dev, VIRTIO_PMD_DEFAULT_GUEST_FEATURES);
        if (ret < 0)
-               return ret;
+               goto out;
 
        /* Setup interrupt callback  */
        if (eth_dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC)
@@ -1634,6 +1634,10 @@ eth_virtio_dev_init(struct rte_eth_dev *eth_dev)
                        virtio_interrupt_handler, eth_dev);
 
        return 0;
+
+out:
+       rte_free(eth_dev->data->mac_addrs);
+       return ret;
 }
 
 static int