diff --git a/drivers/iommu/iommufd/pages.c b/drivers/iommu/iommufd/pages.c
index dbe51ecb9a20..a07373cf013c 100644
--- a/drivers/iommu/iommufd/pages.c
+++ b/drivers/iommu/iommufd/pages.c
@@ -1897,7 +1897,7 @@ int iopt_area_fill_domains(struct iopt_area *area, struct iopt_pages *pages)
 	unsigned long done_all_end_index;
 	struct iommu_domain *domain;
 	unsigned long unmap_index;
-	struct pfn_reader pfns;
+	struct pfn_reader pfns = {};
 	unsigned long index;
 	int rc;