[media] radio-si476x: add return value check to avoid dead code

Dead code found on below code:
    si476x_radio_add_new_custom(radio, SI476X_IDX_DIVERSITY_MODE);
    if (rval < 0)
            goto exit;

    si476x_radio_add_new_custom(radio, SI476X_IDX_INTERCHIP_LINK);
    if (rval < 0)  ====> Dead code !!!
            goto exit;

The piece of code miss return value check after calling .si476x_radio_add_new_custom(),
the patch fix it.

Signed-off-by: Fugang Duan <B38611@freescale.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

diff --git a/drivers/media/radio/radio-si476x.c b/drivers/media/radio/radio-si476x.c
index 859f0c0..271f725 100644 (file)
--- a/drivers/media/radio/radio-si476x.c
+++ b/drivers/media/radio/radio-si476x.c
@@ -1530,11 +1530,11 @@ static int si476x_radio_probe(struct platform_device *pdev)
        if (si476x_core_has_diversity(radio->core)) {
                si476x_ctrls[SI476X_IDX_DIVERSITY_MODE].def =
                        si476x_phase_diversity_mode_to_idx(radio->core->diversity_mode);
-               si476x_radio_add_new_custom(radio, SI476X_IDX_DIVERSITY_MODE);
+               rval = si476x_radio_add_new_custom(radio, SI476X_IDX_DIVERSITY_MODE);
                if (rval < 0)
                        goto exit;
 
-               si476x_radio_add_new_custom(radio, SI476X_IDX_INTERCHIP_LINK);
+               rval = si476x_radio_add_new_custom(radio, SI476X_IDX_INTERCHIP_LINK);
                if (rval < 0)
                        goto exit;
        }