diff --git a/mm/mprotect.c b/mm/mprotect.c
index 3a23dde73723..bc6bddd156ca 100644
--- a/mm/mprotect.c
+++ b/mm/mprotect.c
@@ -196,10 +196,11 @@ static unsigned long change_pte_range(struct mmu_gather *tlb,
 			pages++;
 		} else if (is_swap_pte(oldpte)) {
 			swp_entry_t entry = pte_to_swp_entry(oldpte);
-			struct page *page = pfn_swap_entry_to_page(entry);
 			pte_t newpte;
 
 			if (is_writable_migration_entry(entry)) {
+				struct page *page = pfn_swap_entry_to_page(entry);
+
 				/*
 				 * A protection check is difficult so
 				 * just be safe and disable write