Commit 
079034073fa ("HID: hiddev cleanup -- handle all error conditions
properly") by mistake removed proper initialization of hid->hiddev pointer
in hiddev_connect() in case usb_register_dev() succeeds for the hiddev node.
Put it properly back in place.
Reported-and-tested-by: Gabriel C <nix.or.die@googlemail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
        INIT_LIST_HEAD(&hiddev->list);
        spin_lock_init(&hiddev->list_lock);
        mutex_init(&hiddev->existancelock);
+       hid->hiddev = hiddev;
        hiddev->hid = hid;
        hiddev->exist = 1;
 
        retval = usb_register_dev(usbhid->intf, &hiddev_class);
        if (retval) {
                err_hid("Not able to get a minor for this device.");
+               hid->hiddev = NULL;
                kfree(hiddev);
                return -1;
        } else {