qcacld-3.0: update the return status properly for wlan_mlme_get_sta_ch_width

Return status of the wlan_mlme_get_sta_ch_width is always
returning error resulting in caller not updating with
the phymode correct the vdev object.

When the kernel is querying phymode via cfg80211_get_channel driver is
returning invalid bandwidth post roam resulting in kernel warning.

Fix this by returning proper status in wlan_mlme_get_sta_ch_width

CRs-Fixed: 3641158
Change-Id: I013f75a3e06768127ffc72776eef6885633e927a

components/mlme/dispatcher/src/wlan_mlme_api.c

@@ -1490,6 +1490,7 @@ QDF_STATUS wlan_mlme_get_sta_ch_width(struct wlan_objmgr_vdev *vdev,
 		phymode = wlan_peer_get_phymode(peer);
 		wlan_peer_obj_unlock(peer);
 		*ch_width = wlan_mlme_get_ch_width_from_phymode(phymode);
+		status = QDF_STATUS_SUCCESS;
 	}
 
 	return  status;