diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c
index 73e47d93e7a05..e27f5ee45f8a5 100644
--- a/drivers/iommu/amd_iommu.c
+++ b/drivers/iommu/amd_iommu.c
@@ -3083,6 +3083,8 @@ static bool amd_iommu_capable(enum iommu_cap cap)
 		return (irq_remapping_enabled == 1);
 	case IOMMU_CAP_NOEXEC:
 		return false;
+	default:
+		break;
 	}
 
 	return false;