ACPI / numa: Simplify acpi_get_node() style

Simplify control flow by removing local variable initialization and
returning a constant as soon as possible.  No functional change.

Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
1 file changed