ASoC: max98373: Fixes a typo in max98373_feedback_get

The snd_soc_put_volsw in max98373_feedback_get is a typo, change it
to snd_soc_get_volsw.

Fixes: 349dd239 ("ASoC: max98373: don't access volatile registers in bias level off")
Signed-off-by: Judy Hsiao <judyhsiao@google.com>
Link: https://lore.kernel.org/r/20210127135620.1143942-1-judyhsiao@chromium.org


Signed-off-by: Mark Brown <broonie@kernel.org>