regulator: fan53555: Use PTR_RET function

Used PTR_RET function instead of IS_ERR and PTR_ERR.
Patch found using coccinelle.

Signed-off-by: Alexandru Gheorghiu <[e-mail]>
Signed-off-by: Mark Brown <[e-mail]>

drivers/regulator/fan53555.c

···
 	rdesc->owner = THIS_MODULE;
 
 	di->rdev = regulator_register(&di->desc, config);
-	if (IS_ERR(di->rdev))
-		return PTR_ERR(di->rdev);
-	return 0;
+	return PTR_RET(di->rdev);
 
 }