[media] af9035: fix missing unlock on error in af9035_ctrl_msg()

Add the missing unlock before return from function af9035_ctrl_msg()
in the error handling case.

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Acked-by: Antti Palosaari <crope@iki.fi>
Reviewed-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 9 insertions, 8 deletions

diff --git a/drivers/media/usb/dvb-usb-v2/af9035.c b/drivers/media/usb/dvb-usb-v2/af9035.c
index b1f7059bf4a5..b638fc1cd574 100644
--- a/drivers/media/usb/dvb-usb-v2/af9035.c
+++ b/drivers/media/usb/dvb-usb-v2/af9035.c
@@ -57,7 +57,7 @@ static int af9035_ctrl_msg(struct dvb_usb_device *d, struct usb_req *req)
                 dev_err(&d->udev->dev, "%s: too much data wlen=%d rlen=%d\n",
                                 __func__, req->wlen, req->rlen);
                 ret = -EINVAL;
-                goto err;
+                goto exit;
         }
 
         state->buf[0] = REQ_HDR_LEN + req->wlen + CHECKSUM_LEN - 1;
@@ -81,7 +81,7 @@ static int af9035_ctrl_msg(struct dvb_usb_device *d, struct usb_req *req)
         ret = dvb_usbv2_generic_rw_locked(d,
                         state->buf, wlen, state->buf, rlen);
         if (ret)
-                goto err;
+                goto exit;
 
         /* no ack for those packets */
         if (req->cmd == CMD_FW_DL)
@@ -95,28 +95,29 @@ static int af9035_ctrl_msg(struct dvb_usb_device *d, struct usb_req *req)
                                 "(%04x != %04x)\n", KBUILD_MODNAME, req->cmd,
                                 tmp_checksum, checksum);
                 ret = -EIO;
-                goto err;
+                goto exit;
         }
 
         /* check status */
         if (state->buf[2]) {
                 /* fw returns status 1 when IR code was not received */
-                if (req->cmd == CMD_IR_GET || state->buf[2] == 1)
-                        return 1;
+                if (req->cmd == CMD_IR_GET || state->buf[2] == 1) {
+                        ret = 1;
+                        goto exit;
+                }
 
                 dev_dbg(&d->udev->dev, "%s: command=%02x failed fw error=%d\n",
                                 __func__, req->cmd, state->buf[2]);
                 ret = -EIO;
-                goto err;
+                goto exit;
         }
 
         /* read request, copy returned data to return buf */
         if (req->rlen)
                 memcpy(req->rbuf, &state->buf[ACK_HDR_LEN], req->rlen);
 exit:
-err:
         mutex_unlock(&d->usb_mutex);
-        if (ret)
+        if (ret < 0)
                 dev_dbg(&d->udev->dev, "%s: failed=%d\n", __func__, ret);
         return ret;
 }