diff --git a/arch/ppc64/kernel/iSeries_vio.c b/arch/ppc64/kernel/iSeries_vio.c
index e876b438027..48f0ebf4405 100644
--- a/arch/ppc64/kernel/iSeries_vio.c
+++ b/arch/ppc64/kernel/iSeries_vio.c
@@ -27,7 +27,7 @@ EXPORT_SYMBOL(iSeries_vio_dev);
 static struct iommu_table veth_iommu_table;
 static struct iommu_table vio_iommu_table;
 
-void __init iommu_vio_init(void)
+static void __init iommu_vio_init(void)
 {
 	struct iommu_table *t;
 	struct iommu_table_cb cb;
@@ -123,6 +123,7 @@ static int __init vio_bus_init_iseries(void)
 
 	err = vio_bus_init();
 	if (err == 0) {
+		iommu_vio_init();
 		vio_bus_device.iommu_table = &vio_iommu_table;
 		iSeries_vio_dev = &vio_bus_device.dev;
 		probe_bus_iseries();
diff --git a/arch/ppc64/mm/init.c b/arch/ppc64/mm/init.c
index 87f256df8de..9edfe267123 100644
--- a/arch/ppc64/mm/init.c
+++ b/arch/ppc64/mm/init.c
@@ -686,9 +686,6 @@ void __init mem_init(void)
 
 	mem_init_done = 1;
 
-#ifdef CONFIG_PPC_ISERIES
-	iommu_vio_init();
-#endif
 	/* Initialize the vDSO */
 	vdso_init();
 }
diff --git a/include/asm-ppc64/iommu.h b/include/asm-ppc64/iommu.h
index 729de5cc21d..72dcf8116b0 100644
--- a/include/asm-ppc64/iommu.h
+++ b/include/asm-ppc64/iommu.h
@@ -104,9 +104,6 @@ extern void iommu_devnode_init_pSeries(struct device_node *dn);
 
 #ifdef CONFIG_PPC_ISERIES
 
-/* Initializes tables for bio buses */
-extern void __init iommu_vio_init(void);
-
 struct iSeries_Device_Node;
 /* Creates table for an individual device node */
 extern void iommu_devnode_init_iSeries(struct iSeries_Device_Node *dn);