platform/x86/intel/ifs: Return a more appropriate error code

scan_chunks_sanity_check() returns -ENOMEM if it encounters an error
while copying IFS test image from memory to Secure Memory.

Return -EIO in this scenario, as it is more appropriate.
Signed-off-by: Jithu Joseph <jithu.joseph@intel.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Tony Luck <tony.luck@intel.com>
Reviewed-by: Sohil Mehta <sohil.mehta@intel.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Link: https://lore.kernel.org/r/20221117035935.4136738-3-jithu.joseph@intel.com

drivers/platform/x86/intel/ifs/load.c

@@ -157,8 +157,10 @@ static int scan_chunks_sanity_check(struct device *dev)
 		INIT_WORK(&local_work.w, copy_hashes_authenticate_chunks);
 		schedule_work_on(cpu, &local_work.w);
 		wait_for_completion(&ifs_done);
-		if (ifsd->loading_error)
+		if (ifsd->loading_error) {
+			ret = -EIO;
 			goto out;
+		}
 		package_authenticated[curr_pkg] = 1;
 	}
 	ret = 0;