diff --git a/xen/drivers/passthrough/amd/iommu_map.c b/xen/drivers/passthrough/amd/iommu_map.c
index d10dd1ac8e..eb38c9a0bf 100644
--- a/xen/drivers/passthrough/amd/iommu_map.c
+++ b/xen/drivers/passthrough/amd/iommu_map.c
@@ -585,8 +585,6 @@ int __init amd_iommu_quarantine_init(struct domain *d)
  out:
     spin_unlock(&hd->arch.mapping_lock);
 
-    amd_iommu_flush_all_pages(d);
-
     /* Pages leaked in failure case */
     return level ? -ENOMEM : 0;
 }
diff --git a/xen/drivers/passthrough/vtd/iommu.c b/xen/drivers/passthrough/vtd/iommu.c
index 52e9ec38e6..322c395403 100644
--- a/xen/drivers/passthrough/vtd/iommu.c
+++ b/xen/drivers/passthrough/vtd/iommu.c
@@ -2914,7 +2914,6 @@ static int __init intel_iommu_quarantine_init(struct domain *d)
     struct dma_pte *parent;
     unsigned int agaw = width_to_agaw(DEFAULT_DOMAIN_ADDRESS_WIDTH);
     unsigned int level = agaw_to_level(agaw);
-    int rc;
 
     if ( hd->arch.pgd_maddr )
     {
@@ -2961,10 +2960,8 @@ static int __init intel_iommu_quarantine_init(struct domain *d)
  out:
     spin_unlock(&hd->arch.mapping_lock);
 
-    rc = iommu_flush_iotlb_all(d);
-
     /* Pages leaked in failure case */
-    return level ? -ENOMEM : rc;
+    return level ? -ENOMEM : 0;
 }
 
 const struct iommu_ops __initconstrel intel_iommu_ops = {