mmc: moxart: Handle error from mmc_of_parse()
mmc: moxart: Handle error from mmc_of_parse()

Since mmc_of_parse() may fail, let's deal with it and thus do proper
error handling.

Cc: Jonas Jensen <c72f4c1d52c160086195ed01f658663cef237767@gmail.com>
Signed-off-by: Ulf Hansson <fe47b31f388f85ce6ddf64bf3a0cf6b46077d0e6@linaro.org>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs