rtfree(9): kernel lock is not required for free(9) calls

[Vitaliy Makkoveev]

Index: sys/net/route.c
===================================================================
RCS file: /cvs/src/sys/net/route.c,v
retrieving revision 1.416
diff -u -p -r1.416 route.c
--- sys/net/route.c     28 Jan 2023 10:17:16 -0000      1.416
+++ sys/net/route.c     19 Apr 2023 14:00:31 -0000
@@ -504,9 +504,10 @@ rtfree(struct rtentry *rt)
 #ifdef MPLS
        rt_mpls_clear(rt);
 #endif
+       KERNEL_UNLOCK();
+
        free(rt->rt_gateway, M_RTABLE, ROUNDUP(rt->rt_gateway->sa_len));
        free(rt_key(rt), M_RTABLE, rt_key(rt)->sa_len);
-       KERNEL_UNLOCK();
 
        pool_put(&rtentry_pool, rt);
 }