LinkedList - How to free the memory allocated using malloc

Question

I have a very simple C code for constructing a Singly Linked list as below, in which I allocate memory for each node dynamically using malloc. At the end of code, I want to

Answer 1

I use something like this:

for (p = curr; NULL != p; p = next) {
    next = p->next;
    free(p);
}