gpio: twl4030: Don't return an error after WARN in .remove
Returning a non-zero value in a platform driver's remove callback only results in an error message ("remove callback returned a non-zero value. This will be ignored.", see platform_remove()), and then the device is removed anyhow. As there was just a WARN_ON triggered, return 0 to drop the follow up warning. The latter output is hardly relevant after the big WARN splat. This is a preparation for making platform remove callbacks return void. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
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