qcacld-3.0: Fix assert when netdev is going down

Move destruction of blocked_scan_request_q and related lock
from __hdd_netdev_notifier_call to hdd_close_adapter
for the former one might be invoked for more than once and
could cause issues.

Change-Id: Ifb62750a09a2dcca381217a41280ad943942ee35
CRs-Fixed: 2267481
1 file changed