How to initialize const members of structs on the heap

I would like to allocate a structure on the heap, initialize it and return a pointer to it from a function. I'm wondering if there's a way for me to initialize const members of a struct in this scenario:

#include <stdlib.h>

typedef struct {
  const int x;
  const int y;
} ImmutablePoint;

ImmutablePoint * make_immutable_point(int x, int y)
{
  ImmutablePoint *p = (ImmutablePoint *)malloc(sizeof(ImmutablePoint));
  if (p == NULL) abort();
  // How to initialize members x and y?
  return p;
}

Should I conclude from this that it is impossible to allocate and initialize a struct on the heap which contains const members?