mmc: dw_mmc: fix to clear interrupt pending when exception

The previous code could not clear raw interrupt pending when
If clock update is fail to CIU after error occurs.
The remaining raw interrupt blocks to issue next operation,
The host controller can not process no longer.

Bug: 7390764, 7638890

Change-Id: I39208cea8d889f04524fa2f4c2d7ce58e91db623
Signed-off-by: Hosung Kim <hosung0.kim@samsung.com>