staging: unisys: visorbus: Cleanup goto in bus_create

Rename it to what it does instead of the default ambiguous
cleanup.

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