mmc: renesas-sdhi: Stop transmission in case tuning block transfer fails

mmc: renesas-sdhi: Stop transmission in case tuning block transfer fails

The current code uses the state of tuning block received by SCC to
determine whether or not to send transmission stop command. This is
not correct. Use the state of tuning block transfer to determine
whether or not to send transmission stop command instead, because
the transmission stop command has to be sent in case the tuning
block transfer failed.

This requires two changes, separate variable to store and check the
state of tuning block received by SCC, and another separate variable
to store and check return value from transmission stop command.

Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>
Reviewed-by: Paul Barker <paul.barker.ct@bp.renesas.com>
Tested-by: Paul Barker <paul.barker.ct@bp.renesas.com>
Reviewed-by: Jaehoon Chung <jh80.chung@samsung.com>