scsi: zfcp: Clean up zfcp_erp_action_ready()

We already maintain a pointer to act->adapter. Use it consistently to avoid
any confusion about whose ->erp_ready_head and ->erp_ready_wq we are
accessing.

Link: https://lore.kernel.org/r/d1bb04322f240dee32f4c4a551bc93bc736f4b01.1593780621.git.bblock@linux.ibm.com
Reviewed-by: Steffen Maier <maier@linux.ibm.com>
Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Signed-off-by: Benjamin Block <bblock@linux.ibm.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

drivers/s390/scsi/zfcp_erp.c

@@ -68,7 +68,7 @@ static void zfcp_erp_action_ready(struct zfcp_erp_action *act)
 {
 	struct zfcp_adapter *adapter = act->adapter;
 
-	list_move(&act->list, &act->adapter->erp_ready_head);
+	list_move(&act->list, &adapter->erp_ready_head);
 	zfcp_dbf_rec_run("erardy1", act);
 	wake_up(&adapter->erp_ready_wq);
 	zfcp_dbf_rec_run("erardy2", act);