[PATCH] marvell: libertas_tf: fix error return code of if_usb_prog_firmware()

[Jia-Ju Bai]

When check_fwfile_format() fails, no error return code of
if_usb_prog_firmware() is assigned.
To fix this bug, ret is assigned with -EINVAL as error return code.

Reported-by: TOTE Robot <os...@tsinghua.edu.cn>
Signed-off-by: Jia-Ju Bai <baijiaju1...@gmail.com>
---
 drivers/net/wireless/marvell/libertas_tf/if_usb.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/net/wireless/marvell/libertas_tf/if_usb.c 
b/drivers/net/wireless/marvell/libertas_tf/if_usb.c
index a92916dc81a9..ceca22da5a29 100644
--- a/drivers/net/wireless/marvell/libertas_tf/if_usb.c
+++ b/drivers/net/wireless/marvell/libertas_tf/if_usb.c
@@ -825,8 +825,10 @@ static int if_usb_prog_firmware(struct lbtf_private *priv)
        }
        kernel_param_unlock(THIS_MODULE);
 
-       if (check_fwfile_format(cardp->fw->data, cardp->fw->size))
+       if (check_fwfile_format(cardp->fw->data, cardp->fw->size)) {
+               ret = -EINVAL;
                goto release_fw;
+       }
 
 restart:
        if (if_usb_submit_rx_urb_fwload(cardp) < 0) {
-- 
2.17.1