[PATCH] PCI: set correct value for iov device before device

[Xudong Hao <xudong.hao@intel.com>]

Since device registering is put into pci_device_add(), it must set value of
Virtual Function device's member before the pci_dev is put to device tree. Or
some relevant subsystem of driver model such as xen will report a incorrect
IOV device to Xen hypervior.

Signed-off-by: Xudong Hao <xudong.hao@intel.com>
---
 drivers/pci/iov.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/pci/iov.c b/drivers/pci/iov.c
index c93071d..43d3de9 100644
--- a/drivers/pci/iov.c
+++ b/drivers/pci/iov.c
@@ -110,12 +110,12 @@ static int virtfn_add(struct pci_dev *dev, int id, int reset)
 	if (reset)
 		__pci_reset_function(virtfn);
 
-	pci_device_add(virtfn, virtfn->bus);
-	mutex_unlock(&iov->dev->sriov->lock);
-
 	virtfn->physfn = pci_dev_get(dev);
 	virtfn->is_virtfn = 1;
 
+	pci_device_add(virtfn, virtfn->bus);
+	mutex_unlock(&iov->dev->sriov->lock);
+
 	rc = pci_bus_add_device(virtfn);
 	sprintf(buf, "virtfn%u", id);
 	rc = sysfs_create_link(&dev->dev.kobj, &virtfn->dev.kobj, buf);
-- 
1.7.12.1