[PATCH] of_mdio: use IS_ERR_OR_NULL() in of_mdiobus_register_phy()

[Sergei Shtylyov]

IS_ERR_OR_NULL() is basically open coded in of_mdiobus_register_phy(), so
just call it directly...

Signed-off-by: Sergei Shtylyov <sergei.shtyl...@cogentembedded.com>

---
The patch is against DaveM's 'net-next.git' repo.

 drivers/of/of_mdio.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Index: net-next/drivers/of/of_mdio.c
===================================================================
--- net-next.orig/drivers/of/of_mdio.c
+++ net-next/drivers/of/of_mdio.c
@@ -56,7 +56,7 @@ static int of_mdiobus_register_phy(struc
                phy = phy_device_create(mdio, addr, phy_id, 0, NULL);
        else
                phy = get_phy_device(mdio, addr, is_c45);
-       if (!phy || IS_ERR(phy))
+       if (IS_ERR_OR_NULL(phy))
                return 1;
 
        rc = irq_of_parse_and_map(child, 0);