wil6210: stop_ap to leave interface closed

cfg80211_ops.stop_ap supposed to have interface carried turned off as
post condition. Fulfill this requirement.

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
diff --git a/drivers/net/wireless/ath/wil6210/cfg80211.c b/drivers/net/wireless/ath/wil6210/cfg80211.c
index 37d5338..ea331e4 100644
--- a/drivers/net/wireless/ath/wil6210/cfg80211.c
+++ b/drivers/net/wireless/ath/wil6210/cfg80211.c
@@ -822,13 +822,9 @@
 	wmi_pcp_stop(wil);
 
 	__wil_down(wil);
-	__wil_up(wil);
 
 	mutex_unlock(&wil->mutex);
 
-	/* some functions above might fail (e.g. __wil_up). Nevertheless, we
-	 * return success because AP has stopped
-	 */
 	return 0;
 }