[patch 2/2] [media] tuner-xc2028: unlock on error in xc2028_get_afc()

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We need to do a mutex_unlock(&priv->lock) before returning.

Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>

diff --git a/drivers/media/common/tuners/tuner-xc2028.c b/drivers/media/common/tuners/tuner-xc2028.c
index 9e60285..ea0550e 100644
--- a/drivers/media/common/tuners/tuner-xc2028.c
+++ b/drivers/media/common/tuners/tuner-xc2028.c
@@ -978,7 +978,7 @@ static int xc2028_get_afc(struct dvb_frontend *fe, s32 *afc)
 	/* Get AFC */
 	rc = xc2028_get_reg(priv, XREG_FREQ_ERROR, &afc_reg);
 	if (rc < 0)
-		return rc;
+		goto ret;
 
 	*afc = afc_reg * 15625; /* Hz */
 
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