powerp/mm: Update code comments

We are updating pte in those functions.

Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

arch/powerpc/mm/hash64_4k.c

@@ -106,7 +106,7 @@ repeat:
 			}
 		}
 		/*
-		 * Hypervisor failure. Restore old pmd and return -1
+		 * Hypervisor failure. Restore old pte and return -1
 		 * similar to __hash_page_*
 		 */
 		if (unlikely(slot == -2)) {

arch/powerpc/mm/hash64_64k.c

@@ -188,7 +188,7 @@ repeat:
 		}
 	}
 	/*
-	 * Hypervisor failure. Restore old pmd and return -1
+	 * Hypervisor failure. Restore old pte and return -1
 	 * similar to __hash_page_*
 	 */
 	if (unlikely(slot == -2)) {
@@ -310,7 +310,7 @@ repeat:
 			}
 		}
 		/*
-		 * Hypervisor failure. Restore old pmd and return -1
+		 * Hypervisor failure. Restore old pte and return -1
 		 * similar to __hash_page_*
 		 */
 		if (unlikely(slot == -2)) {