}
        ext_table_size = total_size - (MC_HEADER_SIZE + data_size);
        if (ext_table_size) {
+               u32 ext_table_sum = 0;
+               u32 *ext_tablep;
+
                if ((ext_table_size < EXT_HEADER_SIZE)
                 || ((ext_table_size - EXT_HEADER_SIZE) % EXT_SIGNATURE_SIZE)) {
                        if (print_err)
                        return -EFAULT;
                }
                ext_sigcount = ext_header->count;
-       }
 
-       /* check extended table checksum */
-       if (ext_table_size) {
-               u32 ext_table_sum = 0;
-               u32 *ext_tablep = (u32 *)ext_header;
+               /* check extended table checksum */
+               ext_tablep = (u32 *)ext_header;
 
                i = ext_table_size / sizeof(u32);
                while (i--)