cciss: fix call to put_controller_in_performant_mode

call to put_controller_in_performant_mode was in the wrong place
The call inadvertently ended up in an error path.

Signed-off-by: Mike Miller <mike.miller@hp.com>
Cc: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>