efi_loader: simplify efi_tcg2_hash_log_extend_event()

The value of variable nt is never used. Just use NULL when calling
efi_check_pe().

The API function is not expected to write to the console. Such output might
have unwanted side effects on the screen layout of an EFI application.

Leave error handling to the caller.

Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Reviewed-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>

lib/efi_loader/efi_tcg2.c

@@ -607,12 +607,9 @@ efi_tcg2_hash_log_extend_event(struct efi_tcg2_protocol *this, u64 flags,
 	 * Format"
 	 */
 	if (flags & PE_COFF_IMAGE) {
-		IMAGE_NT_HEADERS32 *nt;
-
 		ret = efi_check_pe((void *)(uintptr_t)data_to_hash,
-				   data_to_hash_len, (void **)&nt);
+				   data_to_hash_len, NULL);
 		if (ret != EFI_SUCCESS) {
-			log_err("Not a valid PE-COFF file\n");
 			ret = EFI_UNSUPPORTED;
 			goto out;
 		}