qcacld-3.0: Return ret for hdd_trigger_psoc_idle_restart

When hdd_trigger_psoc_idle_restart is called from hdd_open,
if the process has some signal pending, pld_idle_restart
may return back before finishing start_modules. If keep running
in hdd_open, when creating vdev it may access invalid
pdev.

In hdd_open, change to return failure if idle_restart returns
error.

Change-Id: I454d421d0758dd4e90c4b4fba1f65096c0834446
CRs-Fixed: 2476316

core/hdd/src/wlan_hdd_main.c

@@ -9392,6 +9392,8 @@ int hdd_psoc_idle_restart(struct device *dev)
 
 int hdd_trigger_psoc_idle_restart(struct hdd_context *hdd_ctx)
 {
+	int ret;
+
 	QDF_BUG(rtnl_is_locked());
 
 	if (hdd_ctx->driver_status == DRIVER_MODULES_ENABLED) {
@@ -9400,9 +9402,9 @@ int hdd_trigger_psoc_idle_restart(struct hdd_context *hdd_ctx)
 		return 0;
 	}
 
-	pld_idle_restart(hdd_ctx->parent_dev, hdd_psoc_idle_restart);
+	ret = pld_idle_restart(hdd_ctx->parent_dev, hdd_psoc_idle_restart);
 
-	return 0;
+	return ret;
 }
 
 /**