error_setg() appends newline to the formatted message.
Fixes: cb94ff5f80c5 ("audio: propagate Error * out of audio_init")
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
(cherry picked from commit 09a36158c283f7448d1b00fdbb6634f05d27f922)
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>