pci: hotplug: pciehp: fix error code path in hpc_power_off_slot

Fix the error code path in hpc_power_off_slot().

The Bad DLLP Mask bit must be restored before return.
Signed-off-by: NKenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: NKristen Carlson Accardi <kristen.c.accardi@intel.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

drivers/pci/hotplug/pciehp_hpc.c

@@ -711,7 +711,8 @@ static int hpc_power_off_slot(struct slot * slot)
 	retval = pcie_write_cmd(slot, slot_cmd, cmd_mask);
 	if (retval) {
 		err("%s: Write command failed!\n", __FUNCTION__);
-		return -1;
+		retval = -1;
+		goto out;
 	}
 	dbg("%s: SLOTCTRL %x write cmd %x\n",
 	    __FUNCTION__, ctrl->cap_base + SLOTCTRL, slot_cmd);
@@ -722,7 +723,7 @@ static int hpc_power_off_slot(struct slot * slot)
 	 * removed from the slot/adapter.
 	 */
 	msleep(1000);
-
+ out:
 	if (changed)
 		pcie_unmask_bad_dllp(ctrl);