--- x/mm/madvise.c
+++ y/mm/madvise.c
@@ -482,10 +482,7 @@ restart:
 				err = split_folio(folio);
 				folio_unlock(folio);
 				folio_put(folio);
-				if (err)
-					continue;
-				start_pte = pte =
-					pte_offset_map_lock(mm, pmd, addr, &ptl);
+				start_pte = pte = pte_offset_map_lock(mm, pmd, addr, &ptl);
 				if (!start_pte)
 					break;
 				arch_enter_lazy_mmu_mode();