ACPI: APEI: Remove unneeded result variables

Return the erst_get_record_id_begin() and apei_exec_write_register()
return values directly instead of storing them in redundant local
variables.
Reported-by: Zeal Robot <zealci@zte.com.cn>
Signed-off-by: ye xingchen <ye.xingchen@zte.com.cn>
[ rjw: Changelog edits ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

drivers/acpi/apei/apei-base.c

@@ -125,12 +125,9 @@ EXPORT_SYMBOL_GPL(apei_exec_write_register);
 int apei_exec_write_register_value(struct apei_exec_context *ctx,
 				   struct acpi_whea_header *entry)
 {
-	int rc;
-
 	ctx->value = entry->value;
-	rc = apei_exec_write_register(ctx, entry);
 
-	return rc;
+	return apei_exec_write_register(ctx, entry);
 }
 EXPORT_SYMBOL_GPL(apei_exec_write_register_value);
 

drivers/acpi/apei/erst.c

@@ -1020,14 +1020,10 @@ static int reader_pos;
 
 static int erst_open_pstore(struct pstore_info *psi)
 {
-	int rc;
-
 	if (erst_disable)
 		return -ENODEV;
 
-	rc = erst_get_record_id_begin(&reader_pos);
-
-	return rc;
+	return erst_get_record_id_begin(&reader_pos);
 }
 
 static int erst_close_pstore(struct pstore_info *psi)