diff --git a/drivers/iommu/amd/iommu.c b/drivers/iommu/amd/iommu.c
index a9d8b32a8476..ef64e01f66d7 100644
--- a/drivers/iommu/amd/iommu.c
+++ b/drivers/iommu/amd/iommu.c
@@ -3562,9 +3562,6 @@ static struct irq_domain *get_irq_domain_for_devid(struct irq_alloc_info *info,
 	case X86_IRQ_ALLOC_TYPE_IOAPIC_GET_PARENT:
 	case X86_IRQ_ALLOC_TYPE_HPET_GET_PARENT:
 		return iommu->ir_domain;
-	case X86_IRQ_ALLOC_TYPE_PCI_MSI:
-	case X86_IRQ_ALLOC_TYPE_PCI_MSIX:
-		return iommu->msi_domain;
 	default:
 		WARN_ON_ONCE(1);
 		return NULL;