soc: ti: knav_qmss: Put refcount for dev node in failure case

for_each_child_of_node increases refcount for each device_node and decreases previous one
in a loop, but in case jump out of a loop current node refcount has no chnase for decreases
so requires an of_node_put for jupm out cases.

Fix based on raport from
scripts/coccinelle/iterators/for_each_child.cocci
Signed-off-by: Vasyl Gomonovych <gomonovych@gmail.com>
Signed-off-by: Santosh Shilimkar <santosh.shilimkar@oracle.com>

drivers/soc/ti/knav_dma.c

@@ -758,6 +758,7 @@ static int knav_dma_probe(struct platform_device *pdev)
 	for_each_child_of_node(node, child) {
 		ret = dma_init(node, child);
 		if (ret) {
+			of_node_put(child);
 			dev_err(&pdev->dev, "init failed with %d\n", ret);
 			break;
 		}

drivers/soc/ti/knav_qmss_queue.c

@@ -1087,6 +1087,7 @@ static int knav_queue_setup_regions(struct knav_device *kdev,
 	for_each_child_of_node(regions, child) {
 		region = devm_kzalloc(dev, sizeof(*region), GFP_KERNEL);
 		if (!region) {
+			of_node_put(child);
 			dev_err(dev, "out of memory allocating region\n");
 			return -ENOMEM;
 		}
@@ -1399,6 +1400,7 @@ static int knav_queue_init_qmgrs(struct knav_device *kdev,
 	for_each_child_of_node(qmgrs, child) {
 		qmgr = devm_kzalloc(dev, sizeof(*qmgr), GFP_KERNEL);
 		if (!qmgr) {
+			of_node_put(child);
 			dev_err(dev, "out of memory allocating qmgr\n");
 			return -ENOMEM;
 		}
@@ -1498,6 +1500,7 @@ static int knav_queue_init_pdsps(struct knav_device *kdev,
 	for_each_child_of_node(pdsps, child) {
 		pdsp = devm_kzalloc(dev, sizeof(*pdsp), GFP_KERNEL);
 		if (!pdsp) {
+			of_node_put(child);
 			dev_err(dev, "out of memory allocating pdsp\n");
 			return -ENOMEM;
 		}