i2c: rtl9300: use of instead of fwnode

Avoids having to use to_of_node and just assign directly. This is an OF
only driver anyway.

Use _scoped for the for each loop to avoid refcount leaks.

Signed-off-by: Rosen Penev <rosenp@gmail.com>
Reviewed-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
Signed-off-by: Andi Shyti <andi.shyti@kernel.org>
Link: https://lore.kernel.org/r/20251217063027.37987-3-rosenp@gmail.com

Author: neheb

drivers/i2c/busses/i2c-rtl9300.c

@@ -371,7 +371,6 @@ static int rtl9300_i2c_probe(struct platform_device *pdev)
 {
 	struct device *dev = &pdev->dev;
 	struct rtl9300_i2c *i2c;
-	struct fwnode_handle *child;
 	const struct rtl9300_i2c_drv_data *drv_data;
 	struct reg_field fields[F_NUM_FIELDS];
 	u32 clock_freq, scl_num, sda_num;
@@ -415,15 +414,15 @@ static int rtl9300_i2c_probe(struct platform_device *pdev)
 		return ret;
 
 	i = 0;
-	device_for_each_child_node(dev, child) {
+	for_each_child_of_node_scoped(dev->of_node, child) {
 		struct rtl9300_i2c_chan *chan = &i2c->chans[i];
 		struct i2c_adapter *adap = &chan->adap;
 
-		ret = fwnode_property_read_u32(child, "reg", &sda_num);
+		ret = of_property_read_u32(child, "reg", &sda_num);
 		if (ret)
 			return ret;
 
-		ret = fwnode_property_read_u32(child, "clock-frequency", &clock_freq);
+		ret = of_property_read_u32(child, "clock-frequency", &clock_freq);
 		if (ret)
 			clock_freq = I2C_MAX_STANDARD_MODE_FREQ;
 
@@ -449,7 +448,7 @@ static int rtl9300_i2c_probe(struct platform_device *pdev)
 		adap->retries = 3;
 		adap->dev.parent = dev;
 		i2c_set_adapdata(adap, chan);
-		adap->dev.of_node = to_of_node(child);
+		adap->dev.of_node = child;
 		snprintf(adap->name, sizeof(adap->name), "%s SDA%d\n", dev_name(dev), sda_num);
 		i++;