regulator: cros-ec: Fix error code in dev_err message

stable inclusion
from stable-5.10.46
commit 0ea923519a3fdd81ce9c69ddcbd60809657deb88
bugzilla: 168323
CVE: NA

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

[ Upstream commit 3d681804 ]

Show proper error code instead of 0.
Signed-off-by: NAxel Lin <axel.lin@ingics.com>
Link: https://lore.kernel.org/r/20210512075824.620580-1-axel.lin@ingics.comSigned-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: NWeilong Chen <chenweilong@huawei.com>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>

drivers/regulator/cros-ec-regulator.c

@@ -225,8 +225,9 @@ static int cros_ec_regulator_probe(struct platform_device *pdev)
 
 	drvdata->dev = devm_regulator_register(dev, &drvdata->desc, &cfg);
 	if (IS_ERR(drvdata->dev)) {
+		ret = PTR_ERR(drvdata->dev);
 		dev_err(&pdev->dev, "Failed to register regulator: %d\n", ret);
-		return PTR_ERR(drvdata->dev);
+		return ret;
 	}
 
 	platform_set_drvdata(pdev, drvdata);