qcacld-3.0: Handle the error condition in start modules

Currently if cds_dp_open is failed, hdd_start_modules is not
disabling the scheduler thread. So, if we start wlan again,
leads to crash on scheduler restart as it was not
disabled properly.

To fix this add dispatcher_disable in the cleanup in
hdd_start_modules to disable scheduler.

Change-Id: Ibe12e8bf74a8cb8b7604fd2b57426005c922f65a
CRs-Fixed: 3550858

core/hdd/src/wlan_hdd_main.c

@@ -5090,6 +5090,7 @@ cds_txrx_free:
 	cds_dp_close(hdd_ctx->psoc);
 
 close:
+	dispatcher_disable();
 	hdd_ctx->driver_status = DRIVER_MODULES_CLOSED;
 	hdd_info("Wlan transition aborted (now CLOSED)");