[SCSI] be2iscsi: fix null ptr ref in conn get param

The ep_disconnect function could be freeing the ep
while beiscsi_conn_get_param is running. This has
the driver use the get ep param callback instead
of the get conn param to fix this.

Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>

drivers/scsi/be2iscsi/be_iscsi.h

@@ -48,8 +48,8 @@ int beiscsi_conn_bind(struct iscsi_cls_session *cls_session,
 		      struct iscsi_cls_conn *cls_conn,
 		      uint64_t transport_fd, int is_leading);
 
-int beiscsi_conn_get_param(struct iscsi_cls_conn *cls_conn,
-			   enum iscsi_param param, char *buf);
+int beiscsi_ep_get_param(struct iscsi_endpoint *ep, enum iscsi_param param,
+			 char *buf);
 
 int beiscsi_get_host_param(struct Scsi_Host *shost,
 			   enum iscsi_host_param param, char *buf);