HID: usbhid: fix improper return value

Function hid_post_reset() should return negative error codes on failures.
However, in its implementation, it incorrectly returns 1.  This patch fixes the
bug, returning proper error codes on failures.

Signed-off-by: Pan Bian <bianpan2016@163.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>