qcacmn: decrement scheduler qidx count during deregister

Decrement scheduler qidx count during deregister.

Change-Id: Idabb59628aa9f493f17cfdc72aca1699e1b71e4d
CRs-Fixed: 1111374

scheduler/src/scheduler_api.c

@@ -313,6 +313,7 @@ QDF_STATUS scheduler_deregister_module(QDF_MODULE_ID qid)
 	ctx = &sched_ctx->queue_ctx;
 	qidx = ctx->scheduler_msg_qid_to_qidx[qid];
 	ctx->scheduler_msg_process_fn[qidx] = NULL;
+	sched_ctx->sch_last_qidx--;
 	ctx->scheduler_msg_qid_to_qidx[qidx] = SCHEDULER_NUMBER_OF_MSG_QUEUE;
 	QDF_TRACE(QDF_MODULE_ID_SCHEDULER, QDF_TRACE_LEVEL_INFO,
 		FL("Exit"));