ASoC: twl6040: fix error return code in twl6040_probe()
platform_get_irq() returns an error code, but the twl6040
driver ignores it and always returns -EINVAL. This is not correct,
and prevents -EPROBE_DEFER from being propagated properly.
Notice that platform_get_irq() no longer returns 0 on error.
Print and propagate the return value of platform_get_irq on failure.
Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com> Signed-off-by: Mark Brown <broonie@kernel.org>