confile: cleanup get_config_net_mtu()

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>

diff --git a/src/lxc/confile.c b/src/lxc/confile.c
index 89e91ed5acd96f0ae14b855c4ef9cc763113780d..3d7a54ee6ed5f0ddcaf1d713f23973981030709f 100644 (file)
--- a/src/lxc/confile.c
+++ b/src/lxc/confile.c
@@ -5954,7 +5954,7 @@ static int get_config_net_mtu(const char *key, char *retv, int inlen,
                memset(retv, 0, inlen);
 
        if (!netdev)
-               return -1;
+               return ret_errno(EINVAL);
 
        if (netdev->mtu)
                strprint(retv, inlen, "%s", netdev->mtu);