c
     int ret_value = 0; // Separate variable for the return value
     // ... other code ...

     // Make a copy of the data needed for calculating ret
     int data_copy_size = /* Calculate the necessary size */
     void *data_copy = kmalloc(data_copy_size, GFP_KERNEL);
     if (!data_copy) {
         // Handle memory allocation failure
         vfree(data);
         return -ENOMEM;
     }
     memcpy(data_copy, data, data_copy_size);

     ret = qca_tlv_check_data(hdev, config, data, size, soc_type);

     // Use data_copy for any calculations affecting ret_value
     if (ret == 0) { // Example condition 
         // ... perform operations on data_copy to determine ret_value ... 
     }

     // ... rest of the code ...

     kfree(data_copy); // Free the copied data
     vfree(data);
     return ret_value; 
     