ipmi: Reset the KCS timeout when starting error recovery

The OBF timer in KCS was not reset in one situation when error recovery
was started, resulting in an immediate timeout.

Reported-by: Bodo Stroesser <bstroesser@ts.fujitsu.com>
Signed-off-by: Corey Minyard <cminyard@mvista.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>