[IPV6]: fix section mismatch warnings

Removed useless and buggy __exit section in the different
ipv6 subsystems. Otherwise they will be called inside an
init section during rollbacking in case of an error in the
protocol initialization.
Signed-off-by: Daniel Lezcano <dlezcano@fr.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/ipv6/addrconf.c

@@ -4223,7 +4223,7 @@ errout:
 	return err;
 }
 
-void __exit addrconf_cleanup(void)
+void addrconf_cleanup(void)
 {
 	struct net_device *dev;
 	struct inet6_ifaddr *ifa;

net/ipv6/raw.c

@@ -1321,7 +1321,7 @@ out:
 	return ret;
 }
 
-void __exit rawv6_exit(void)
+void rawv6_exit(void)
 {
 	inet6_unregister_protosw(&rawv6_protosw);
 }

net/ipv6/tcp_ipv6.c

@@ -2193,7 +2193,7 @@ out_tcpv6_protosw:
 	goto out;
 }
 
-void __exit tcpv6_exit(void)
+void tcpv6_exit(void)
 {
 	sock_release(tcp6_socket);
 	inet6_unregister_protosw(&tcpv6_protosw);

net/ipv6/udp.c

@@ -1035,7 +1035,7 @@ out_udpv6_protocol:
 	goto out;
 }
 
-void __exit udpv6_exit(void)
+void udpv6_exit(void)
 {
 	inet6_unregister_protosw(&udpv6_protosw);
 	inet6_del_protocol(&udpv6_protocol, IPPROTO_UDP);

net/ipv6/udplite.c

@@ -96,7 +96,7 @@ out_udplitev6_protocol:
 	goto out;
 }
 
-void __exit udplitev6_exit(void)
+void udplitev6_exit(void)
 {
 	inet6_unregister_protosw(&udplite6_protosw);
 	inet6_del_protocol(&udplitev6_protocol, IPPROTO_UDPLITE);