Memory leak in Mex - matlab

Question

I am doing below in a loop with dims = [1024 768 256]. I want to read a set of block loaded by block_iter (1 to 16) into a RAM of hardware. The memory call seems to display the memory leaking. Am I doing it wrong somewhere?
for (block_iter = 1; block_iter <= num_blocks; block_iter++)
{
//Allocate memory to read data;
mxArray *B= mxCreateNumericArray(3, dims, mxUINT8_CLASS, mxREAL); // Pointer to mxArray
mxArray *in = mxCreateDoubleMatrix(1, 1, mxREAL);
mexCallMATLAB(0, NULL, 0, NULL, "memory");
memcpy(mxGetPr(in), &block_iter, sizeof(double)*1*1);
mexCallMATLAB(1, &B, 1, &in, "data_feeder");
//Call RAM_FILL
ram_fill(d,B);
//Deallocate memory;
mxDestroyArray(B);
mxDestroyArray(in);
}
P.S: the memory leak is around 192 MB each loop which is exactly the amount of data in array B.

Answer 1

for (block_iter = 1; block_iter <= num_blocks; block_iter++)
{
mxArray *B;// = mxCreateNumericArray(3,dims,mxUINT8_CLASS,mxREAL); //Pointer to mxArray
mxArray *ppLhs[1];
mxArray *in = mxCreateDoubleMatrix(1, 1, mxREAL);
// mexCallMATLAB(0,NULL,0,NULL,"memory");
memcpy(mxGetPr(in), &block_iter, sizeof(double)*1*1);
mexCallMATLAB(1, ppLhs,1,&in,"data_feeder");
B = ppLhs[0];
//Call RAM_FILL
ram_fill(d,B,block_iter);
// mexPrintf("BlockIter %d\n",(int)block_iter);
//Deallocate memory;
mxDestroyArray(B);
mxDestroyArray(in);
}
I did this as the mxCallMatlab worked fine with an array of mxArray *, this works fine without memory leak. If there's any elegant solution please let me know.