net: mvmdio: slight optimisation of orion_mdio_write

Make only a single call to mutex_unlock in orion_mdio_write.

Signed-off-by: Leigh Brown <leigh@solinno.co.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/marvell/mvmdio.c b/drivers/net/ethernet/marvell/mvmdio.c
index e3898b3..0cfa0c8 100644 (file)
--- a/drivers/net/ethernet/marvell/mvmdio.c
+++ b/drivers/net/ethernet/marvell/mvmdio.c
@@ -150,10 +150,8 @@ static int orion_mdio_write(struct mii_bus *bus, int mii_id,
        mutex_lock(&dev->lock);
 
        ret = orion_mdio_wait_ready(bus);
-       if (ret < 0) {
-               mutex_unlock(&dev->lock);
-               return ret;
-       }
+       if (ret < 0)
+               goto out;
 
        writel(((mii_id << MVMDIO_SMI_PHY_ADDR_SHIFT) |
                (regnum << MVMDIO_SMI_PHY_REG_SHIFT)  |
@@ -161,9 +159,9 @@ static int orion_mdio_write(struct mii_bus *bus, int mii_id,
                (value << MVMDIO_SMI_DATA_SHIFT)),
               dev->regs);
 
+out:
        mutex_unlock(&dev->lock);
-
-       return 0;
+       return ret;
 }
 
 static int orion_mdio_reset(struct mii_bus *bus)