diff --git a/xen/drivers/passthrough/amd/iommu_map.c b/xen/drivers/passthrough/amd/iommu_map.c
index 500a176e47..080ffd4173 100644
--- a/xen/drivers/passthrough/amd/iommu_map.c
+++ b/xen/drivers/passthrough/amd/iommu_map.c
@@ -656,8 +656,6 @@ int __init cf_check 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 870bf465bc..a00f436467 100644
--- a/xen/drivers/passthrough/vtd/iommu.c
+++ b/xen/drivers/passthrough/vtd/iommu.c
@@ -2975,9 +2975,6 @@ static int __init cf_check intel_iommu_quarantine_init(struct domain *d)
  out:
     spin_unlock(&hd->arch.mapping_lock);
 
-    if ( !rc )
-        rc = iommu_flush_iotlb_all(d);
-
     /* Pages may be leaked in failure case */
     return rc;
 }