__free_pages_core() is only used in bootmem init and hot-add memory init
path.  Let's put it in __meminit section.

Link: https://lkml.kernel.org/r/20240706061615.30322-1-richard.weiyang@gmail.comSigned-off-by: Wei Yang <richard.weiyang@gmail.com>
Acked-by: David Hildenbrand <david@redhat.com>
Cc: Oscar Salvador <osalvador@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>