mfd: ti_am335x_tscadc: Ensure a balanced number of node get/put

of_node_put() should be called after a successful of_get_child_by_name().

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Link: https://lore.kernel.org/r/20211015081506.933180-9-miquel.raynal@bootlin.com

drivers/mfd/ti_am335x_tscadc.c

@@ -142,6 +142,7 @@ static	int ti_tscadc_probe(struct platform_device *pdev)
 	node = of_get_child_by_name(pdev->dev.of_node, "tsc");
 	of_property_read_u32(node, "ti,wires", &tsc_wires);
 	of_property_read_u32(node, "ti,coordiante-readouts", &readouts);
+	of_node_put(node);
 
 	node = of_get_child_by_name(pdev->dev.of_node, "adc");
 	of_property_for_each_u32(node, "ti,adc-channels", prop, cur, val) {
@@ -149,9 +150,13 @@ static	int ti_tscadc_probe(struct platform_device *pdev)
 		if (val > 7) {
 			dev_err(&pdev->dev, " PIN numbers are 0..7 (not %d)\n",
 					val);
+			of_node_put(node);
 			return -EINVAL;
 		}
 	}
+
+	of_node_put(node);
+
 	total_channels = tsc_wires + adc_channels;
 	if (total_channels > 8) {
 		dev_err(&pdev->dev, "Number of i/p channels more than 8\n");