net: phy: mscc-miim: remove redundant timeout check

readl_poll_timeout already returns -ETIMEDOUT if the condition isn't
satisfied, there's no need to check again the condition after calling
it. Remove the redundant timeout check.
Signed-off-by: Antoine Tenart <antoine.tenart@bootlin.com>
Reviewed-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/phy/mdio-mscc-miim.c

@@ -43,12 +43,8 @@ static int mscc_miim_wait_ready(struct mii_bus *bus)
 	struct mscc_miim_dev *miim = bus->priv;
 	u32 val;
 
-	readl_poll_timeout(miim->regs + MSCC_MIIM_REG_STATUS, val,
-			   !(val & MSCC_MIIM_STATUS_STAT_BUSY), 50, 10000);
-	if (val & MSCC_MIIM_STATUS_STAT_BUSY)
-		return -ETIMEDOUT;
-
-	return 0;
+	return readl_poll_timeout(miim->regs + MSCC_MIIM_REG_STATUS, val,
+				  !(val & MSCC_MIIM_STATUS_STAT_BUSY), 50, 10000);
 }
 
 static int mscc_miim_read(struct mii_bus *bus, int mii_id, int regnum)