net: mpls: remove unnecessary initialization of err

err is initialized to EINVAL and not used before it is set again.
Remove the unnecessary initialization.
Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/mpls/af_mpls.c

@@ -743,8 +743,6 @@ static int mpls_nh_build_from_cfg(struct mpls_route_config *cfg,
 	if (!nh)
 		return -ENOMEM;
 
-	err = -EINVAL;
-
 	nh->nh_labels = cfg->rc_output_labels;
 	for (i = 0; i < nh->nh_labels; i++)
 		nh->nh_label[i] = cfg->rc_output_label[i];