net: ksz9477: remove unnecessary variable

We don't do anything useful with the master dev, so remove the variable.

Signed-off-by: Tim Harvey <tharvey@gateworks.com>
Reviewed-by: Ramon Fried <rfried.dev@gmail.com>
diff --git a/drivers/net/ksz9477.c b/drivers/net/ksz9477.c
index fecc394..5b0ef78 100644
--- a/drivers/net/ksz9477.c
+++ b/drivers/net/ksz9477.c
@@ -443,15 +443,10 @@
 {
 	struct dsa_pdata *pdata = dev_get_uclass_plat(dev);
 	struct ksz_dsa_priv *priv = dev_get_priv(dev);
-	struct udevice *master = dsa_get_master(dev);
 	int i, ret;
 	u8 data8;
 	u32 id;
 
-	if (!master)
-		return -ENODEV;
-
-	dev_dbg(dev, "%s %s master:%s\n", __func__, dev->name, master->name);
 	dev_set_parent_priv(dev, priv);
 
 	ret = i2c_set_chip_offset_len(dev, 2);