staging: unisys: visorbus: don't put code in declaration.

Simplify the code by not putting the assignment in the declaration. Define
it and then assign it, so the function doesn't get bunched up on the
right.

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>