rmnet_core: Set proper maxtype element for NL attributes

maxtype should be set to the value of the highest attribute type that
is valid, not the number of valid attributes accepted. This ensures that
attributes with types higher than this number are ignored properly.

Change-Id: Ife53a4a9a7327a8d89e709320eb1c6cb50992922
Signed-off-by: Sean Tranchetti <stranche@codeaurora.org>

core/rmnet_config.c

@@ -517,7 +517,7 @@ nla_put_failure:
 
 struct rtnl_link_ops rmnet_link_ops __read_mostly = {
 	.kind		= "rmnet",
-	.maxtype	= __IFLA_RMNET_EXT_MAX,
+	.maxtype	= __IFLA_RMNET_EXT_MAX - 1,
 	.priv_size	= sizeof(struct rmnet_priv),
 	.setup		= rmnet_vnd_setup,
 	.validate	= rmnet_rtnl_validate,