Add error code handling to unused 'ret' variable that was never used.
Return an error code from functions called within vnt_radio_power_on.

Issue reported by coccinelle (coccicheck).

Suggested-by: Quentin Deslandes <quentin.deslan...@itdev.co.uk>
Suggested-by: Stefano Brivio <sbri...@redhat.com>
Signed-off-by: John B. Wyatt IV <jbwya...@gmail.com>
---
 drivers/staging/vt6656/card.c | 19 ++++++++++++++-----
 1 file changed, 14 insertions(+), 5 deletions(-)

diff --git a/drivers/staging/vt6656/card.c b/drivers/staging/vt6656/card.c
index dc3ab10eb630..9d23c3ec1e60 100644
--- a/drivers/staging/vt6656/card.c
+++ b/drivers/staging/vt6656/card.c
@@ -723,9 +723,13 @@ int vnt_radio_power_on(struct vnt_private *priv)
 {
        int ret = 0;
 
-       vnt_exit_deep_sleep(priv);
+       ret = vnt_exit_deep_sleep(priv);
+       if (ret)
+               goto end;
 
-       vnt_mac_reg_bits_on(priv, MAC_REG_HOSTCR, HOSTCR_RXON);
+       ret = vnt_mac_reg_bits_on(priv, MAC_REG_HOSTCR, HOSTCR_RXON);
+       if (ret)
+               goto end;
 
        switch (priv->rf_type) {
        case RF_AL2230:
@@ -734,13 +738,18 @@ int vnt_radio_power_on(struct vnt_private *priv)
        case RF_VT3226:
        case RF_VT3226D0:
        case RF_VT3342A0:
-               vnt_mac_reg_bits_on(priv, MAC_REG_SOFTPWRCTL,
-                                   (SOFTPWRCTL_SWPE2 | SOFTPWRCTL_SWPE3));
+               ret = vnt_mac_reg_bits_on(priv, MAC_REG_SOFTPWRCTL,
+                                        (SOFTPWRCTL_SWPE2 | SOFTPWRCTL_SWPE3));
                break;
        }
+       if (ret)
+               goto end;
 
-       vnt_mac_reg_bits_off(priv, MAC_REG_GPIOCTL1, GPIO3_INTMD);
+       ret = vnt_mac_reg_bits_off(priv, MAC_REG_GPIOCTL1, GPIO3_INTMD);
+       if (ret)
+               goto end;
 
+end:
        return ret;
 }
 
-- 
2.25.1

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