NFC: pn533: fix use-after-free and memleaks

The driver would fail to deregister and its class device and free
related resources on late probe errors.

Reported-by:  <syzbot+cb035c75c03dbe34b796@syzkaller.appspotmail.com>
Fixes: 32ecc75d ("NFC: pn533: change order operations in dev registation")
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>