Staging: silicom: Remove unnecessary variable from do_cmd()

Remove unnecessary variable ioctl from do_cmd().

As a consequence, this patch removes an assignment to ioctl in an if condition,
reported by checkpatch.pl.
Signed-off-by: Rupert Muchembled <rupert@rmuch.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/silicom/bypasslib/bypass.c

@@ -47,13 +47,13 @@ static int do_cmd(struct net_device *dev, struct ifreq *ifr, int cmd, int *data)
 {
 	int ret = -1;
 	struct if_bypass *bypass_cb;
-	static int (*ioctl) (struct net_device *, struct ifreq *, int);
 
 	bypass_cb = (struct if_bypass *)ifr;
 	bypass_cb->cmd = cmd;
 	bypass_cb->data = *data;
-	if ((dev->netdev_ops) && (ioctl = dev->netdev_ops->ndo_do_ioctl)) {
-		ret = ioctl(dev, ifr, SIOCGIFBYPASS);
+
+	if (dev->netdev_ops && dev->netdev_ops->ndo_do_ioctl) {
+		ret = dev->netdev_ops->ndo_do_ioctl(dev, ifr, SIOCGIFBYPASS);
 		*data = bypass_cb->data;
 	}