PCI: ibmphp: Remove unneeded NULL test

Remove unneeded NULL test.  The index variable of list_for_each_entry is
never NULL, as it is the structure that contains the list pointer.

Generated by: scripts/coccinelle/iterators/itnull.cocci
Signed-off-by: NFengguang Wu <fengguang.wu@intel.com>
Signed-off-by: NJulia Lawall <julia.lawall@lip6.fr>
Signed-off-by: NBjorn Helgaas <bhelgaas@google.com>
CC: Geliang Tang <geliangtang@163.com>

drivers/pci/hotplug/ibmphp_core.c

@@ -503,9 +503,6 @@ static int __init init_ops(void)
 	int rc;
 
 	list_for_each_entry(slot_cur, &ibmphp_slot_head, ibm_slot_list) {
-		if (!slot_cur)
-			return -ENODEV;
-
 		debug("BEFORE GETTING SLOT STATUS, slot # %x\n",
 							slot_cur->number);
 		if (slot_cur->ctrl->revision == 0xFF)