mpls: fix rtm policy in mpls_getroute

fix rtm policy name typo in mpls_getroute and also remove
export of rtm_ipv4_policy

Fixes: 397fc9e5 ("mpls: route get support")
Reported-by: NDavid S. Miller <davem@davemloft.net>
Signed-off-by: NRoopa Prabhu <roopa@cumulusnetworks.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

net/ipv4/fib_frontend.c

@@ -626,7 +626,6 @@ const struct nla_policy rtm_ipv4_policy[RTA_MAX + 1] = {
 	[RTA_UID]		= { .type = NLA_U32 },
 	[RTA_MARK]		= { .type = NLA_U32 },
 };
-EXPORT_SYMBOL_GPL(rtm_ipv4_policy);
 
 static int rtm_to_fib_config(struct net *net, struct sk_buff *skb,
 			     struct nlmsghdr *nlh, struct fib_config *cfg,

net/mpls/af_mpls.c

@@ -2091,7 +2091,7 @@ static int mpls_getroute(struct sk_buff *in_skb, struct nlmsghdr *in_nlh,
 	u8 n_labels;
 
 	err = nlmsg_parse(in_nlh, sizeof(*rtm), tb, RTA_MAX,
-			  rtm_ipv4_policy, extack);
+			  rtm_mpls_policy, extack);
 	if (err < 0)
 		goto errout;