diff --git a/drivers/iommu/dmar.c b/drivers/iommu/dmar.c
index 60ab474bfff38e58ba1e246d7da6ca3a201677cb..06d268abe951bebd946deac82cf092f3f7a67ee3 100644
--- a/drivers/iommu/dmar.c
+++ b/drivers/iommu/dmar.c
@@ -678,8 +678,7 @@ static int __init dmar_acpi_dev_scope_init(void)
 				       andd->device_name);
 				continue;
 			}
-			acpi_bus_get_device(h, &adev);
-			if (!adev) {
+			if (acpi_bus_get_device(h, &adev)) {
 				pr_err("Failed to get device for ACPI object %s\n",
 				       andd->device_name);
 				continue;