mmc: host: reprogram the key to cover the invalid config case

This is a workaround to cover a corner case where the host controller
crashes with invalid config error as the crypto config in crypto engine
are lost between key programming call and descriptor processing.

Test: fscryptctl test cases.

Change-Id: I83c1f928a52747686a7341f6d80478dc3d683191
Signed-off-by: Neeraj Soni <neersoni@codeaurora.org>