arch/x86: do not explicitly clear Reserved flag in free_pagetable

In free_pagetable() we use the non-atomic version for clearing the
PageReserved bit from the page.  free_pagetable() will either call
free_reserved_page() or put_page_bootmem(), which will eventually end up
calling free_reserved_page(), and in there we already clear the
PageReserved flag.

Link: https://lkml.kernel.org/r/20240527044523.29207-1-osalvador@suse.deSigned-off-by: Oscar Salvador <osalvador@suse.de>
Acked-by: David Hildenbrand <david@redhat.com>
Cc: Dave Hansen <dave.hansen@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

arch/x86/mm/init_64.c

@@ -980,8 +980,6 @@ static void __meminit free_pagetable(struct page *page, int order)
 
 	/* bootmem page has reserved flag */
 	if (PageReserved(page)) {
-		__ClearPageReserved(page);
-
 		magic = page->index;
 		if (magic == SECTION_INFO || magic == MIX_SECTION_INFO) {
 			while (nr_pages--)