usb: core: sysfs: Unmerge @usb3_hardware_lpm_attr_group in remove_power_attributes()

Device attribute group @usb3_hardware_lpm_attr_group is merged by
add_power_attributes(), but it is not unmerged explicitly, fixed by
unmerging it in remove_power_attributes().

Fixes: 655fe4e ("usbcore: add sysfs support to xHCI usb3 hardware LPM")
Cc: [email protected]
Signed-off-by: Zijun Hu <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>

Author: Zijun Hu

drivers/usb/core/sysfs.c

@@ -670,6 +670,7 @@ static int add_power_attributes(struct device *dev)
 
 static void remove_power_attributes(struct device *dev)
 {
+	sysfs_unmerge_group(&dev->kobj, &usb3_hardware_lpm_attr_group);
 	sysfs_unmerge_group(&dev->kobj, &usb2_hardware_lpm_attr_group);
 	sysfs_unmerge_group(&dev->kobj, &power_attr_group);
 }