net: marvell: prestera: Fix error return code in prestera_port_create()

Fix to return a negative error code from the error handling
case instead of 0, as done elsewhere in this function.

Fixes: 501ef3066c89 ("net: marvell: prestera: Add driver for Prestera family ASIC devices")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Zhang Changzhong <zhangchangzhong@huawei.com>
Link: https://lore.kernel.org/r/1607071782-34006-1-git-send-email-zhangchangzhong@huawei.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

diff --git a/drivers/net/ethernet/marvell/prestera/prestera_main.c b/drivers/net/ethernet/marvell/prestera/prestera_main.c
index 0f20e07..da4b286 100644 (file)
--- a/drivers/net/ethernet/marvell/prestera/prestera_main.c
+++ b/drivers/net/ethernet/marvell/prestera/prestera_main.c
@@ -318,8 +318,10 @@ static int prestera_port_create(struct prestera_switch *sw, u32 id)
                goto err_port_init;
        }
 
-       if (port->fp_id >= PRESTERA_MAC_ADDR_NUM_MAX)
+       if (port->fp_id >= PRESTERA_MAC_ADDR_NUM_MAX) {
+               err = -EINVAL;
                goto err_port_init;
+       }
 
        /* firmware requires that port's MAC address consist of the first
         * 5 bytes of the base MAC address