hugetlb_cgroup: use helper macro NUMA_NO_NODE

It's better to use NUMA_NO_NODE instead of magic number -1. Minor
readability improvement.

Link: https://lkml.kernel.org/r/20220729080106.12752-5-linmiaohe@huawei.com


Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
Reviewed-by: Mina Almasry <almasrymina@google.com>
Cc: Mike Kravetz <mike.kravetz@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>