staging: wfx: fix access to le32 attribute 'ps_mode_error'

The attribute ps_mode_error is little-endian. We have to take to the
endianness when we access it.
Signed-off-by: Jérôme Pouiller <jerome.pouiller@silabs.com>
Link: https://lore.kernel.org/r/20200512150414.267198-9-Jerome.Pouiller@silabs.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/wfx/hif_rx.c

@@ -158,6 +158,7 @@ static int hif_event_indication(struct wfx_dev *wdev,
 {
 	struct wfx_vif *wvif = wdev_to_wvif(wdev, hif->interface);
 	const struct hif_ind_event *body = buf;
+	int cause;
 
 	if (!wvif) {
 		dev_warn(wdev->dev, "received event for non-existent vif\n");
@@ -176,10 +177,10 @@ static int hif_event_indication(struct wfx_dev *wdev,
 		dev_dbg(wdev->dev, "ignore BSSREGAINED indication\n");
 		break;
 	case HIF_EVENT_IND_PS_MODE_ERROR:
+		cause = le32_to_cpu(body->event_data.ps_mode_error);
 		dev_warn(wdev->dev, "error while processing power save request: %d\n",
-			 body->event_data.ps_mode_error);
-		if (body->event_data.ps_mode_error ==
-		    HIF_PS_ERROR_AP_NOT_RESP_TO_POLL) {
+			 cause);
+		if (cause == HIF_PS_ERROR_AP_NOT_RESP_TO_POLL) {
 			wvif->bss_not_support_ps_poll = true;
 			schedule_work(&wvif->update_pm_work);
 		}