diff --git a/drivers/iommu/omap-iommu.c b/drivers/iommu/omap-iommu.c
index 4aab631ef517..d9cf2820c02e 100644
--- a/drivers/iommu/omap-iommu.c
+++ b/drivers/iommu/omap-iommu.c
@@ -1661,7 +1661,7 @@ static struct iommu_device *omap_iommu_probe_device(struct device *dev)
 	num_iommus = of_property_count_elems_of_size(dev->of_node, "iommus",
 						     sizeof(phandle));
 	if (num_iommus < 0)
-		return 0;
+		return ERR_PTR(-ENODEV);
 
 	arch_data = kcalloc(num_iommus + 1, sizeof(*arch_data), GFP_KERNEL);
 	if (!arch_data)