mm: hugetlb_vmemmap: remove redundant list_del()

The ->lru field will be assigned to a new value in __free_page().  So it
is unnecessary to delete it from the @list.  Just remove it to simplify
the code.

Link: https://lkml.kernel.org/r/20221027033641.66709-1-songmuchun@bytedance.comSigned-off-by: Muchun Song <songmuchun@bytedance.com>
Reviewed-by: Mike Kravetz <mike.kravetz@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

mm/hugetlb_vmemmap.c

@@ -232,10 +232,8 @@ static void free_vmemmap_page_list(struct list_head *list)
 {
 	struct page *page, *next;
 
-	list_for_each_entry_safe(page, next, list, lru) {
-		list_del(&page->lru);
+	list_for_each_entry_safe(page, next, list, lru)
 		free_vmemmap_page(page);
-	}
 }
 
 static void vmemmap_remap_pte(pte_t *pte, unsigned long addr,