[PATCH 2/3] wifi: mt76: mt7915: check return value before accessing free_block_num

[Ryder Lee]

Check return value of mt7915_mcu_get_eeprom_free_block() first before
accessing free_block_num.

Fixes: bbc1d4154ec1 ("mt76: mt7915: add default calibrated data support")
Signed-off-by: Ryder Lee <ryder.lee at mediatek.com>
---
 drivers/net/wireless/mediatek/mt76/mt7915/eeprom.c | 7 +++++--
 drivers/net/wireless/mediatek/mt76/mt7915/mcu.c    | 4 ++--
 2 files changed, 7 insertions(+), 4 deletions(-)

diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/eeprom.c b/drivers/net/wireless/mediatek/mt76/mt7915/eeprom.c
index 59069fb86414..3ab07ad0c26e 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7915/eeprom.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7915/eeprom.c
@@ -111,8 +111,11 @@ static int mt7915_eeprom_load(struct mt7915_dev *dev)
 		u8 free_block_num;
 		u32 block_num, i;
 
-		mt7915_mcu_get_eeprom_free_block(dev, &free_block_num);
-		/* efuse info not enough */
+		ret = mt7915_mcu_get_eeprom_free_block(dev, &free_block_num);
+		if (ret < 0)
+			return ret;
+
+		/* efuse info isn't enough */
 		if (free_block_num >= 29)
 			return -EINVAL;
 
diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c b/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c
index ca315af3905b..f9e4c3e80af0 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c
@@ -2792,8 +2792,8 @@ int mt7915_mcu_get_eeprom(struct mt7915_dev *dev, u32 offset)
 	int ret;
 	u8 *buf;
 
-	ret = mt76_mcu_send_and_get_msg(&dev->mt76, MCU_EXT_QUERY(EFUSE_ACCESS), &req,
-				sizeof(req), true, &skb);
+	ret = mt76_mcu_send_and_get_msg(&dev->mt76, MCU_EXT_QUERY(EFUSE_ACCESS),
+					&req, sizeof(req), true, &skb);
 	if (ret)
 		return ret;
 
-- 
2.18.0