ASoC: codecs: wcd934x: fix return value of wcd934x_rx_hph_mode_put

ASoC: codecs: wcd934x: fix return value of wcd934x_rx_hph_mode_put

[ Upstream commit 4b0bec6088588a120d33db85b1f0d9f096d1df71 ]

wcd934x_rx_hph_mode_put currently returns zero eventhough it changes the value.
Fix this, so that change notifications are sent correctly.

Fixes: 1cde8b822332 ("ASoC: wcd934x: add basic controls")
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Link: https://lore.kernel.org/r/20220222183212.11580-10-srinivas.kandagatla@linaro.org
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>