net: mvmdio: simplify the smi read and write error paths

Cosmetic patch simplifying the smi read and write error paths. It also
align their error paths with the ones of the xsmi functions.
Signed-off-by: NAntoine Tenart <antoine.tenart@free-electrons.com>
Reviewed-by: NFlorian Fainelli <f.fainelli@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/ethernet/marvell/mvmdio.c

@@ -149,7 +149,7 @@ static int orion_mdio_smi_read(struct mii_bus *bus, int mii_id,
 
 	ret = orion_mdio_wait_ready(&orion_mdio_smi_ops, bus);
 	if (ret < 0)
-		goto out;
+		return ret;
 
 	writel(((mii_id << MVMDIO_SMI_PHY_ADDR_SHIFT) |
 		(regnum << MVMDIO_SMI_PHY_REG_SHIFT)  |
@@ -158,18 +158,15 @@ static int orion_mdio_smi_read(struct mii_bus *bus, int mii_id,
 
 	ret = orion_mdio_wait_ready(&orion_mdio_smi_ops, bus);
 	if (ret < 0)
-		goto out;
+		return ret;
 
 	val = readl(dev->regs);
 	if (!(val & MVMDIO_SMI_READ_VALID)) {
 		dev_err(bus->parent, "SMI bus read not valid\n");
-		ret = -ENODEV;
-		goto out;
+		return -ENODEV;
 	}
 
-	ret = val & GENMASK(15, 0);
-out:
-	return ret;
+	return val & GENMASK(15, 0);
 }
 
 static int orion_mdio_smi_write(struct mii_bus *bus, int mii_id,
@@ -183,7 +180,7 @@ static int orion_mdio_smi_write(struct mii_bus *bus, int mii_id,
 
 	ret = orion_mdio_wait_ready(&orion_mdio_smi_ops, bus);
 	if (ret < 0)
-		goto out;
+		return ret;
 
 	writel(((mii_id << MVMDIO_SMI_PHY_ADDR_SHIFT) |
 		(regnum << MVMDIO_SMI_PHY_REG_SHIFT)  |
@@ -191,8 +188,7 @@ static int orion_mdio_smi_write(struct mii_bus *bus, int mii_id,
 		(value << MVMDIO_SMI_DATA_SHIFT)),
 	       dev->regs);
 
-out:
-	return ret;
+	return 0;
 }
 
 static int orion_mdio_xsmi_is_done(struct orion_mdio_dev *dev)