[PATCH] Bluetooth: mediatek: Fix memory leak

[Gustavo A. R. Silva]

In case memory resources for *fw* were allocated, release them before
return.

Addresses-Coverity-ID: 1472611 ("Resource leak")
Fixes: 7237c4c9ec92 ("Bluetooth: mediatek: Add protocol support for MediaTek 
serial devices")
Signed-off-by: Gustavo A. R. Silva <gust...@embeddedor.com>
---
 drivers/bluetooth/btmtkuart.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/drivers/bluetooth/btmtkuart.c b/drivers/bluetooth/btmtkuart.c
index ed2a5c7..4593baf 100644
--- a/drivers/bluetooth/btmtkuart.c
+++ b/drivers/bluetooth/btmtkuart.c
@@ -144,8 +144,10 @@ static int mtk_setup_fw(struct hci_dev *hdev)
        fw_size = fw->size;
 
        /* The size of patch header is 30 bytes, should be skip */
-       if (fw_size < 30)
-               return -EINVAL;
+       if (fw_size < 30) {
+               err = -EINVAL;
+               goto free_fw;
+       }
 
        fw_size -= 30;
        fw_ptr += 30;
@@ -172,8 +174,8 @@ static int mtk_setup_fw(struct hci_dev *hdev)
                fw_ptr += dlen;
        }
 
+free_fw:
        release_firmware(fw);
-
        return err;
 }
 
-- 
2.7.4