ACPI: simplify scan.c coding
ACPI: simplify scan.c coding

No functional changes; just remove leftover, unused "buffer" and simplify
control flow (no need to remember error values and goto the end, when we can
simply return the value directly).

Signed-off-by: Bjorn Helgaas <10beeee9ebfac68af8330145c8378a1d1bb2a283@hp.com>
Signed-off-by: Andrew Morton <5c1e68b099950c134891f0b6e179498a8ebe9cf9@osdl.org>
Signed-off-by: Len Brown <b060cfa1096cc6e8be83699ddb4ed8a77dd63af5@intel.com>

KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas