diff --git a/mm/memory-tiers.c b/mm/memory-tiers.c
index 939e200c283bbb313056b9c8479a20bfd04f6154..c734658c6242443d5c2a4609531028c939846d74 100644
--- a/mm/memory-tiers.c
+++ b/mm/memory-tiers.c
@@ -645,7 +645,7 @@ static int __init memory_tier_init(void)
 	 * than default DRAM tier.
 	 */
 	default_dram_type = alloc_memory_type(MEMTIER_ADISTANCE_DRAM);
-	if (!default_dram_type)
+	if (IS_ERR(default_dram_type))
 		panic("%s() failed to allocate default DRAM tier\n", __func__);
 
 	/*