PCI PM: Read power state from device after trying to change it on resume

pci_restore_standard_config() unconditionally changes current_state
to PCI_D0 after attempting to change the device's power state, but
it should rather read the actual current power state from the
device.

Signed-off-by: Rafael J. Wysocki <[e-mail]>
Acked-by: Linus Torvalds <[e-mail]>
Signed-off-by: Jesse Barnes <[e-mail]>

drivers/pci/pci.c

···
 		break;
 	}
 
-	dev->current_state = PCI_D0;
+	pci_update_current_state(dev, PCI_D0);
 
  Restore:
 	return dev->state_saved ? pci_restore_state(dev) : 0;