sky2: Hold RTNL while calling dev_close()

dev_close() must be called holding the RTNL.
Signed-off-by: NBen Hutchings <bhutchings@solarflare.com>
Signed-off-by: NJeff Garzik <jgarzik@redhat.com>

drivers/net/sky2.c

@@ -4404,7 +4404,9 @@ static int sky2_resume(struct pci_dev *pdev)
 			if (err) {
 				printk(KERN_ERR PFX "%s: could not up: %d\n",
 				       dev->name, err);
+				rtnl_lock();
 				dev_close(dev);
+				rtnl_unlock();
 				goto out;
 			}
 		}