diff --git a/drivers/iommu/mtk_iommu.c b/drivers/iommu/mtk_iommu.c
index 9c1ce8b46a17..392b8c167c44 100644
--- a/drivers/iommu/mtk_iommu.c
+++ b/drivers/iommu/mtk_iommu.c
@@ -462,7 +462,7 @@ static irqreturn_t mtk_iommu_isr(int irq, void *dev_id)
 		fault_larb = data->plat_data->larbid_remap[fault_larb][sub_comm];
 	}
 
-	if (report_iommu_fault(&dom->domain, bank->parent_dev, fault_iova,
+	if (!dom || report_iommu_fault(&dom->domain, bank->parent_dev, fault_iova,
 			       write ? IOMMU_FAULT_WRITE : IOMMU_FAULT_READ)) {
 		dev_err_ratelimited(
 			bank->parent_dev,