[PATCH v1] staging: rtl8723bs: fix null dereference in find_network

[Ethan Tidmore]

The pwlan variable has the possibility of returning NULL and is not
checked for NULL and then later dereferenced.

Fixes: 554c0a3abf21 ("staging: Add rtl8723bs sdio wifi driver")
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Ethan Tidmore <ethantidmore06@xxxxxxxxx>
---
 drivers/staging/rtl8723bs/core/rtw_mlme.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/drivers/staging/rtl8723bs/core/rtw_mlme.c b/drivers/staging/rtl8723bs/core/rtw_mlme.c
index f81a29cd6a78..29dd0b56223a 100644
--- a/drivers/staging/rtl8723bs/core/rtw_mlme.c
+++ b/drivers/staging/rtl8723bs/core/rtw_mlme.c
@@ -835,8 +835,11 @@ static void find_network(struct adapter *adapter)
 	struct wlan_network *tgt_network = &pmlmepriv->cur_network;
 
 	pwlan = rtw_find_network(&pmlmepriv->scanned_queue, tgt_network->network.mac_address);
-	if (pwlan)
-		pwlan->fixed = false;
+
+	if (!pwlan)
+		return;
+
+	pwlan->fixed = false;
 
 	if (check_fwstate(pmlmepriv, WIFI_ADHOC_MASTER_STATE) &&
 	    (adapter->stapriv.asoc_sta_count == 1))
-- 
2.52.0