net: dsa: qca8k: remove extra mutex_init in qca8k_setup

Mutex is already init in sw_probe. Remove the extra init in qca8k_setup.
Signed-off-by: Ansuel Smith <ansuelsmth@gmail.com>
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/dsa/qca8k.c

@@ -1086,8 +1086,6 @@ qca8k_setup(struct dsa_switch *ds)
 	if (ret)
 		return ret;
 
-	mutex_init(&priv->reg_mutex);
-
 	/* Start by setting up the register mapping */
 	priv->regmap = devm_regmap_init(ds->dev, NULL, priv,
 					&qca8k_regmap_config);