net: lwip: do not return CMD_RET_USAGE if no interface
If the dns command cannot find a network interface, we should return
CMD_RETFAIURE and not -1 (CMD_RET_USAGE).
Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Reviewed-by: Jerome Forissier <jerome.forissier@linaro.org>
diff --git a/net/lwip/dns.c b/net/lwip/dns.c
index 4b937fe..1de63c9 100644
--- a/net/lwip/dns.c
+++ b/net/lwip/dns.c
@@ -56,7 +56,7 @@
netif = net_lwip_new_netif(udev);
if (!netif)
- return -1;
+ return CMD_RET_FAILURE;
dns_init();