drivers/net/acenic.c: fix check-after-use

@@ -3124,20 +3124,14 @@ static int __devinit read_eeprom_byte(st
 	struct ace_private *ap = netdev_priv(dev);
 	struct ace_regs __iomem *regs = ap->regs;
 	unsigned long flags;
 	u32 local;
 	int result = 0;
 	short i;
 
-	if (!dev) {
-		printk(KERN_ERR "No device!\n");
-		result = -ENODEV;
-		goto out;
-	}
-
 	/*
 	 * Don't take interrupts on this CPU will bit banging
 	 * the %#%#@$ I2C device
 	 */
 	local_irq_save(flags);
 
 	eeprom_start(regs);