x86/mm: Fix enc_status_change_finish_noop()

enc_status_change_finish_noop() is now defined as always-fail, which
doesn't make sense for noop.

The change has no user-visible effect because it is only called if the
platform has CC_ATTR_MEM_ENCRYPT. All platforms with the attribute
override the callback with their own implementation.

Signed-off-by: Kirill A. Shutemov <[email protected]>
Signed-off-by: Dave Hansen <[email protected]>
Reviewed-by: Kuppuswamy Sathyanarayanan <[email protected]>
Link: https://lore.kernel.org/all/20230606095622.1939-4-kirill.shutemov%40linux.intel.com

arch/x86/kernel/x86_init.c

@@ -131,7 +131,7 @@ struct x86_cpuinit_ops x86_cpuinit = {
 static void default_nmi_init(void) { };
 
 static bool enc_status_change_prepare_noop(unsigned long vaddr, int npages, bool enc) { return true; }
-static bool enc_status_change_finish_noop(unsigned long vaddr, int npages, bool enc) { return false; }
+static bool enc_status_change_finish_noop(unsigned long vaddr, int npages, bool enc) { return true; }
 static bool enc_tlb_flush_required_noop(bool enc) { return false; }
 static bool enc_cache_flush_required_noop(void) { return false; }
 static bool is_private_mmio_noop(u64 addr) {return false; }