tipc_aead_users_dec
tipc_aead_users_dec(tx->aead[k], 0);
tipc_aead_users_dec(tx->aead[cur], 0);
tipc_aead_users_dec((struct tipc_aead __force __rcu *)aead, INT_MIN);
static void tipc_aead_users_dec(struct tipc_aead __rcu *aead, int lim);