net: dsa: move cpu port probe to dsa_post_probe

In order to ensure that a DSA driver probe gets called before
dsa_ops->port_probe move the port_probe of the cpu_port to
a post-probe function.

Signed-off-by: Tim Harvey <tharvey@gateworks.com>
Reviewed-by: Ramon Fried <rfried.dev@gmail.com>
Reviewed-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Fabio Estevam <festevam@denx.de>
diff --git a/net/dsa-uclass.c b/net/dsa-uclass.c
index 5b70464..5759ced 100644
--- a/net/dsa-uclass.c
+++ b/net/dsa-uclass.c
@@ -466,7 +466,6 @@
 {
 	struct dsa_pdata *pdata = dev_get_uclass_plat(dev);
 	struct dsa_priv *priv = dev_get_uclass_priv(dev);
-	struct dsa_ops *ops = dsa_get_ops(dev);
 	int err;
 
 	priv->num_ports = pdata->num_ports;
@@ -482,6 +481,15 @@
 	if (err)
 		return err;
 
+	return 0;
+}
+
+static int dsa_post_probe(struct udevice *dev)
+{
+	struct dsa_priv *priv = dev_get_uclass_priv(dev);
+	struct dsa_ops *ops = dsa_get_ops(dev);
+	int err;
+
 	/* Simulate a probing event for the CPU port */
 	if (ops->port_probe) {
 		err = ops->port_probe(dev, priv->cpu_port,
@@ -498,6 +506,7 @@
 	.name = "dsa",
 	.post_bind = dsa_post_bind,
 	.pre_probe = dsa_pre_probe,
+	.post_probe = dsa_post_probe,
 	.per_device_auto = sizeof(struct dsa_priv),
 	.per_device_plat_auto = sizeof(struct dsa_pdata),
 	.per_child_plat_auto = sizeof(struct dsa_port_pdata),