sctp: Remove rt->rt_src usage in sctp_v4_get_saddr()

Flow key is available, so fetch it from there.

Signed-off-by: David S. Miller <[e-mail]>

net/sctp/protocol.c

···
 
 	if (rt) {
 		saddr->v4.sin_family = AF_INET;
-		saddr->v4.sin_addr.s_addr = rt->rt_src;
+		saddr->v4.sin_addr.s_addr = fl->u.ip4.saddr;
 	}
 }