[PATCH] net: phy: fixed_phy: Fix NULL vs IS_ERR() checking in __fixed_phy_register

[Miaoqian Lin]

The fixed_phy_get_gpiod function() returns NULL, it doesn't return error
pointers, using NULL checking to fix this.i

Fixes: 5468e82f7034 ("net: phy: fixed-phy: Drop GPIO from fixed_phy_add()")
Signed-off-by: Miaoqian Lin <linmq006@xxxxxxxxx>
---
 drivers/net/phy/fixed_phy.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/phy/fixed_phy.c b/drivers/net/phy/fixed_phy.c
index c65fb5f5d2dc..a0c256bd5441 100644
--- a/drivers/net/phy/fixed_phy.c
+++ b/drivers/net/phy/fixed_phy.c
@@ -239,8 +239,8 @@ static struct phy_device *__fixed_phy_register(unsigned int irq,
 	/* Check if we have a GPIO associated with this fixed phy */
 	if (!gpiod) {
 		gpiod = fixed_phy_get_gpiod(np);
-		if (IS_ERR(gpiod))
-			return ERR_CAST(gpiod);
+		if (!gpiod)
+			return ERR_PTR(-EINVAL);
 	}
 
 	/* Get the next available PHY address, up to PHY_MAX_ADDR */
-- 
2.17.1