regulator: tps65090: Fix gpio initialization

The config is used for multiple regulators within a for loop. The config
field is not cleared before it is used for the next item. To avoid any
issues this patch adds a proper initialization for the config->ena_gpio
field in case no gpio is available.

Signed-off-by: Markus Pargmann <mpa@pengutronix.de>
Signed-off-by: Mark Brown <broonie@kernel.org>

drivers/regulator/tps65090-regulator.c

@@ -314,6 +314,9 @@ static void tps65090_configure_regulator_config(
 		config->ena_gpio = tps_pdata->gpio;
 		config->ena_gpio_initialized = true;
 		config->ena_gpio_flags = gpio_flag;
+	} else {
+		config->ena_gpio = -EINVAL;
+		config->ena_gpio_initialized = false;
 	}
 }