target: Fix incorrect se_cmd assignment in core_tmr_drain_tmr_list

This patch fixes a bug in core_tmr_drain_tmr_list() where drain_tmr_list
was using the wrong se_tmr_req for cmd assignment due to a typo during the
LUN_RESET re-org.  This was resulting in general protection faults while
using the leftover bogus *tmr_p pointer from list_for_each_entry_safe().
Signed-off-by: Joern Engel <joern@logfs.org>
Cc: Joern Engel <joern@logfs.org>
Cc: stable@kernel.org
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>

drivers/target/target_core_tmr.c

@@ -154,7 +154,7 @@ static void core_tmr_drain_tmr_list(
 	while (!list_empty(&drain_tmr_list)) {
 		tmr = list_entry(drain_tmr_list.next, struct se_tmr_req, tmr_list);
 		list_del(&tmr->tmr_list);
-		cmd = tmr_p->task_cmd;
+		cmd = tmr->task_cmd;
 
 		pr_debug("LUN_RESET: %s releasing TMR %p Function: 0x%02x,"
 			" Response: 0x%02x, t_state: %d\n",