regulator: max8660: remove redundant assignment of variable ret

Variable ret is initialized to a value that is never read before
a return statement and hence can be removed. Remove it.

Addresses-Coverity: ("Unused value")
Signed-off-by: Colin Ian King <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Mark Brown <[e-mail]>

drivers/regulator/max8660.c

···
 		rdev = devm_regulator_register(&client->dev,
 						  &max8660_reg[id], &config);
 		if (IS_ERR(rdev)) {
-			ret = PTR_ERR(rdev);
 			dev_err(&client->dev, "failed to register %s\n",
 				max8660_reg[id].name);
 			return PTR_ERR(rdev);