PCI: pci_restore_state() is returning 0 when it fails

[Breno Leitao <leitao@linux.vnet.ibm.com>]

Actually pci_restore_state() is returning 0 if the restore process
fails, instead of a error value.

If it fails, I believe that it should return -EPERM, once that
it is an invalid operation and probably pci_save_state() wasn't
called.

Signed-off-by: Breno Leitao <leitao@linux.vnet.ibm.com>
---
 drivers/pci/pci.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index 4e4c295..b677ca3 100644
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -857,7 +857,7 @@ pci_restore_state(struct pci_dev *dev)
 	u32 val;
 
 	if (!dev->state_saved)
-		return 0;
+		return -EPERM;
 
 	/* PCI Express register must be restored first */
 	pci_restore_pcie_state(dev);
-- 
1.6.0.4