[PATCH] wifi: mt76: mt7925: add error handling for BSS info in key setup

[Zac Bowling]

From: Zac Bowling <zac at zacbowling.com>

Check return value of mt7925_mcu_add_bss_info() in mt7925_set_key_link()
when setting up cipher for the first time and propagate errors.

The BSS info update with cipher information must succeed before key
programming can proceed. If this MCU command fails, continuing with
key setup would program keys into the firmware for a BSS that doesn't
have the correct cipher configuration.

Reported-by: Zac Bowling <zac at zacbowling.com>
Signed-off-by: Zac Bowling <zac at zacbowling.com>
---
 drivers/net/wireless/mediatek/mt76/mt7925/main.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/net/wireless/mediatek/mt76/mt7925/main.c b/drivers/net/wireless/mediatek/mt76/mt7925/main.c
index a7e1e673c4bc..058394b2e067 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7925/main.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7925/main.c
@@ -637,8 +637,10 @@ static int mt7925_set_link_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
 		struct mt792x_phy *phy = mt792x_hw_phy(hw);
 
 		mconf->mt76.cipher = mt7925_mcu_get_cipher(key->cipher);
-		mt7925_mcu_add_bss_info(phy, mconf->mt76.ctx, link_conf,
-					link_sta, true);
+		err = mt7925_mcu_add_bss_info(phy, mconf->mt76.ctx, link_conf,
+					      link_sta, true);
+		if (err)
+			goto out;
 	}
 
 	if (cmd == SET_KEY)
-- 
2.51.0