mdio_bus: Fix PTR_ERR applied after initialization to constant
Fix coccinelle warning:
./drivers/net/phy/mdio_bus.c:67:5-12: ERROR: PTR_ERR applied after initialization to constant on line 62
./drivers/net/phy/mdio_bus.c:68:5-12: ERROR: PTR_ERR applied after initialization to constant on line 62
Fix this by using IS_ERR before PTR_ERR
Reported-by: Hulk Robot <[email protected]>
Fixes: 71dd6c0dff51 ("net: phy: add support for reset-controller")
Signed-off-by: YueHaibing <[email protected]>
Signed-off-by: David S. Miller <[email protected]>