cmd: mmc: Force mmc reinit when no card present

In case the card is removed, force-init the MMC to start the internal
machinery which deregisters and invalidate the MMC device.

Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Jaehoon Chung <jh80.chung@samsung.com>
1 file changed