[PATCH RESEND 4/4] dma: dma-axi-dmac: simplify axi_dmac_parse_dt()

["Nuno Sá via B4 Relay" <devnull+nuno.sa.analog.com@kernel.org>]

From: Nuno Sá <nuno.sa@analog.com>

Simplify axi_dmac_parse_dt() by using the cleanup device_node class for
automatically releasing the of_node reference when going out of scope.

Signed-off-by: Nuno Sá <nuno.sa@analog.com>
---
 drivers/dma/dma-axi-dmac.c | 13 +++++--------
 1 file changed, 5 insertions(+), 8 deletions(-)

diff --git a/drivers/dma/dma-axi-dmac.c b/drivers/dma/dma-axi-dmac.c
index 25717a6ea9848b6c591a3ab6adb27c6f21f002b9..035fc703506977ad59fd0b6ee8a8e5858d2c120e 100644
--- a/drivers/dma/dma-axi-dmac.c
+++ b/drivers/dma/dma-axi-dmac.c
@@ -7,6 +7,7 @@
  */
 
 #include <linux/bitfield.h>
+#include <linux/cleanup.h>
 #include <linux/clk.h>
 #include <linux/device.h>
 #include <linux/dma-mapping.h>
@@ -927,22 +928,18 @@ static int axi_dmac_parse_chan_dt(struct device_node *of_chan,
 
 static int axi_dmac_parse_dt(struct device *dev, struct axi_dmac *dmac)
 {
-	struct device_node *of_channels, *of_chan;
 	int ret;
 
-	of_channels = of_get_child_by_name(dev->of_node, "adi,channels");
+	struct device_node *of_channels __free(device_node) = of_get_child_by_name(dev->of_node,
+										   "adi,channels");
 	if (of_channels == NULL)
 		return -ENODEV;
 
-	for_each_child_of_node(of_channels, of_chan) {
+	for_each_child_of_node_scoped(of_channels, of_chan) {
 		ret = axi_dmac_parse_chan_dt(of_chan, &dmac->chan);
-		if (ret) {
-			of_node_put(of_chan);
-			of_node_put(of_channels);
+		if (ret)
 			return -EINVAL;
-		}
 	}
-	of_node_put(of_channels);
 
 	return 0;
 }

-- 
2.50.1