Linked List 1:Find a node in LL

public class Solution {
    public static int indexOfNIter(LinkedListNode<Integer> head, int n) {
        if(head==null)
            return -1;
        LinkedListNode<Integer> temp=head;
        int count=0;
        while(temp!=null && temp.data!=n)
        {
            temp=temp.next;
            count++;
        }
        if(temp!=null)
            return count;
        else
            return -1;

    }
}