[RFC] ath10k: Fix shared WEP

[Sujith Manoharan]

Michal Kazior wrote:
> Yes. Basically peer->keys[] should be protected by both conf_mutex and
> data_lock if you want to modify it. If you want to read it you need
> either one.

Ok.

> Thanks! Looks like the `cancel_work_sync(&arvif->wep_key_work);`
> should go _before_ `mutex_lock(&ar->conf_mutex);`.
> 
> I'm busy with some stuff so feel free to send a patch :-)

I'll send a fix after this one. Thanks for the review !

Sujith