In (28f92b5 mmc: core: Try other signal levels during power up) we can
see that there are times when it's valid to try several signal
voltages.  Don't print an ugly error in the logs when that happens.
Signed-off-by: NDoug Anderson <dianders@chromium.org>
Reviewed-by: NAlim Akhtar <alim.akhtar@samsung.com>
Acked-by: NJaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>