regulator: s5m8767: Drop regulators OF node reference

stable inclusion
from stable-5.10.20
commit b1ff96e9191d7fdbf4c6eb00780d47c884acdaec
bugzilla: 50608

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

[ Upstream commit a5872bd3 ]

The device node reference obtained with of_get_child_by_name() should be
dropped on error paths.

Fixes: 26aec009 ("regulator: add device tree support for s5m8767")
Signed-off-by: NKrzysztof Kozlowski <krzk@kernel.org>
Link: https://lore.kernel.org/r/20210121155914.48034-1-krzk@kernel.orgSigned-off-by: NMark Brown <broonie@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/regulator/s5m8767.c

@@ -544,14 +544,18 @@ static int s5m8767_pmic_dt_parse_pdata(struct platform_device *pdev,
 	rdata = devm_kcalloc(&pdev->dev,
 			     pdata->num_regulators, sizeof(*rdata),
 			     GFP_KERNEL);
-	if (!rdata)
+	if (!rdata) {
+		of_node_put(regulators_np);
 		return -ENOMEM;
+	}
 
 	rmode = devm_kcalloc(&pdev->dev,
 			     pdata->num_regulators, sizeof(*rmode),
 			     GFP_KERNEL);
-	if (!rmode)
+	if (!rmode) {
+		of_node_put(regulators_np);
 		return -ENOMEM;
+	}
 
 	pdata->regulators = rdata;
 	pdata->opmode = rmode;