staging: unisys: visorbus: Remove useless else clause in visorutil_spar_detect.

The function visorutil_spar_detect had an if clause that returns from the
function, no need to do the rest of the code in an else clause.

Signed-off-by: David Kershner <david.kershner@unisys.com>
Reviewed-by: Tim Sell <timothy.sell@unisys.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>