vxlan: remove redundant conversion of vni in vxlan_nl2conf

The IFLA_VXLAN_ID data has been converted to local variable vni in
vxlan_nl2conf(), there is no need to do it again when set conf->vni.

Signed-off-by: Wang Liang <[email protected]>
Acked-by: Nikolay Aleksandrov <[email protected]>
Reviewed-by: Petr Machata <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>

Author: Wang Liang

drivers/net/vxlan/vxlan_core.c

@@ -4041,7 +4041,7 @@ static int vxlan_nl2conf(struct nlattr *tb[], struct nlattr *data[],
 			NL_SET_ERR_MSG_ATTR(extack, tb[IFLA_VXLAN_ID], "Cannot change VNI");
 			return -EOPNOTSUPP;
 		}
-		conf->vni = cpu_to_be32(nla_get_u32(data[IFLA_VXLAN_ID]));
+		conf->vni = vni;
 	}
 
 	if (data[IFLA_VXLAN_GROUP]) {