diff --git a/drivers/iommu/io-pgtable-arm.c b/drivers/iommu/io-pgtable-arm.c
index 7e8e2216c294..040f5c467256 100644
--- a/drivers/iommu/io-pgtable-arm.c
+++ b/drivers/iommu/io-pgtable-arm.c
@@ -639,7 +639,7 @@ static size_t __arm_lpae_unmap(struct arm_lpae_io_pgtable *data,
 	pte = READ_ONCE(*ptep);
 	if (!pte) {
 		WARN_ON(!(data->iop.cfg.quirks & IO_PGTABLE_QUIRK_NO_WARN));
-		return -ENOENT;
+		return 0;
 	}
 
 	/* If the size matches this level, we're in the right place */