mmc: core: skip card initialization if power class selection fails
With current implementation of power class selection, mmc_select_powerclass() should never fail. So treat any error returned by this function as serious enough to skip the card initialization. Signed-off-by: NSubhash Jadavani <subhashj@codeaurora.org> Reviewed-by: NNamjae Jeon <linkinjeon@gmail.com> Signed-off-by: NChris Ball <cjb@laptop.org>
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