The dotat() function has been changed to send the TAT
query asynchronously, so there's no lock order loop
because we initialize the data first and then we schedule
the TAT send to happen asynchronously.

This breaks following lock-order loops:

zone->lock (dns_zone_setviewcommit) while holding view->lock
(dns_view_setviewcommit)

keytable->lock (dns_keytable_find) while holding zone->lock
(zone_asyncload)

view->lock (dns_view_findzonecut) while holding keytable->lock
(dns_keytable_forall)

(cherry picked from commit 3c4b68af)