phy: ti: ensure priv is not null before dereferencing it

Currently priv is being dereferenced before priv is being null checked.
Fix this by moving the null check on priv before the dereference.

Detected by CoverityScan, CID#1476018 ("Dereference before null check")

Fixes: 92b58b34741f ("phy: ti: introduce phy-gmii-sel driver")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>

diff --git a/drivers/phy/ti/phy-gmii-sel.c b/drivers/phy/ti/phy-gmii-sel.c
index 77fdaa5519772f55df8deafccbee86a8304b17a0..a52c5bb350333ec14951c32b11f741dd9287db80 100644 (file)
--- a/drivers/phy/ti/phy-gmii-sel.c
+++ b/drivers/phy/ti/phy-gmii-sel.c
@@ -204,11 +204,11 @@ static struct phy *phy_gmii_sel_of_xlate(struct device *dev,
 
        if (args->args_count < 1)
                return ERR_PTR(-EINVAL);
+       if (!priv || !priv->if_phys)
+               return ERR_PTR(-ENODEV);
        if (priv->soc_data->features & BIT(PHY_GMII_SEL_RMII_IO_CLK_EN) &&
            args->args_count < 2)
                return ERR_PTR(-EINVAL);
-       if (!priv || !priv->if_phys)
-               return ERR_PTR(-ENODEV);
        if (phy_id > priv->soc_data->num_ports)
                return ERR_PTR(-EINVAL);
        if (phy_id != priv->if_phys[phy_id - 1].id)