staging: ks7010: change return value of ks_wlan_do_power_save function

This commit change return value of ks_wlan_do_power_save function
from int to void. This function is just returning zero and return
value is not being checked also, so it is nonsense to return an
integer.
Signed-off-by: Sergio Paracuellos <sergio.paracuellos@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/ks7010/ks_hostif.c

@@ -94,14 +94,12 @@ static void ks_wlan_hw_wakeup_task(struct work_struct *work)
 		tasklet_enable(&priv->sme_task);
 }
 
-static
-int ks_wlan_do_power_save(struct ks_wlan_private *priv)
+static void ks_wlan_do_power_save(struct ks_wlan_private *priv)
 {
 	if (is_connect_status(priv->connect_status))
 		hostif_sme_enqueue(priv, SME_POW_MNGMT_REQUEST);
 	else
 		priv->dev_state = DEVICE_STATE_READY;
-	return 0;
 }
 
 static