memory: ti-aemif: Drop child node when jumping out loop

stable inclusion
from stable-5.10.20
commit 509fe94c196f264f34d950bcc2521793c59cc4c2
bugzilla: 50608

--------------------------------

[ Upstream commit 94e9dd43 ]

Call of_node_put() to decrement the reference count of the child node
child_np when jumping out of the loop body of
for_each_available_child_of_node(), which is a macro that increments and
decrements the reference count of child node. If the loop is broken, the
reference of the child node should be dropped manually.

Fixes: 5a7c8154 ("memory: ti-aemif: introduce AEMIF driver")
Signed-off-by: NPan Bian <bianpan2016@163.com>
Link: https://lore.kernel.org/r/20210121090359.61763-1-bianpan2016@163.comSigned-off-by: NKrzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: NSasha Levin <sashal@kernel.org>
Signed-off-by: NChen Jun <chenjun102@huawei.com>
Acked-by: NXie XiuQi <xiexiuqi@huawei.com>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>

drivers/memory/ti-aemif.c

@@ -378,8 +378,10 @@ static int aemif_probe(struct platform_device *pdev)
 		 */
 		for_each_available_child_of_node(np, child_np) {
 			ret = of_aemif_parse_abus_config(pdev, child_np);
-			if (ret < 0)
+			if (ret < 0) {
+				of_node_put(child_np);
 				goto error;
+			}
 		}
 	} else if (pdata && pdata->num_abus_data > 0) {
 		for (i = 0; i < pdata->num_abus_data; i++, aemif->num_cs++) {
@@ -405,8 +407,10 @@ static int aemif_probe(struct platform_device *pdev)
 		for_each_available_child_of_node(np, child_np) {
 			ret = of_platform_populate(child_np, NULL,
 						   dev_lookup, dev);
-			if (ret < 0)
+			if (ret < 0) {
+				of_node_put(child_np);
 				goto error;
+			}
 		}
 	} else if (pdata) {
 		for (i = 0; i < pdata->num_sub_devices; i++) {