netdevsim: remove unneeded semicolon

Eliminate the following coccicheck warning:
 drivers/net/netdevsim/fib.c:569:2-3: Unneeded semicolon
Signed-off-by: Qiheng Lin <linqiheng@huawei.com>
Acked-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/netdevsim/fib.c

@@ -566,7 +566,7 @@ nsim_fib6_rt_create(struct nsim_fib_data *data,
 err_fib6_rt_nh_del:
 	for (i--; i >= 0; i--) {
 		nsim_fib6_rt_nh_del(fib6_rt, rt_arr[i]);
-	};
+	}
 	nsim_fib_rt_fini(&fib6_rt->common);
 	kfree(fib6_rt);
 	return ERR_PTR(err);