ipmi: Remove some unnecessary initializations

The data is allocated with kzalloc, no need to set things to NULL.
Signed-off-by: Corey Minyard <cminyard@mvista.com>

drivers/char/ipmi/ipmi_si_intf.c

@@ -2000,11 +2000,6 @@ int ipmi_si_add_smi(struct si_sm_io *io)
 		ipmi_addr_src_to_str(new_smi->io.addr_source),
 		si_to_str[new_smi->io.si_type]);
 
-	/* So we know not to free it unless we have allocated one. */
-	new_smi->intf = NULL;
-	new_smi->si_sm = NULL;
-	new_smi->handlers = NULL;
-
 	list_add_tail(&new_smi->link, &smi_infos);
 
 	if (initialized) {