qcacld-3.0: delete the pre auth node if any
The issue happens in dual sap case, one sap receives peer's auth req and
creates preauth node for the peer, then adds to the list
mac->lim.pLimPreAuthList. Then Another sap (re)starts, it invokes
lim_init_pre_auth_list to set mac->lim.pLimPreAuthList none. In some cases,
the preauth node added by first sap will be "lost" and causes max pre-auth
nodes reached.
Change-Id: I9f5e99095900472a7c77c6b3273eda3c91dded00
CRs-fixed: 2820407