LU-9119 lnet: selftest MR fix

selftest always responded to the primary nid of the peer rather than
the source of the message, which it should be.

Test-Parameters: trivial
Signed-off-by: Amir Shehata <amir.shehata@intel.com>
Signed-off-by: Olaf Weber <olaf@sgi.com>
Change-Id: I14a4b6ffc5882cb23298429d8a4bd0bcb0a8a5be
Reviewed-on: https://review.whamcloud.com/26723


Tested-by: Jenkins
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: Doug Oucharek <doug.s.oucharek@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>

lnet/selftest/rpc.c

@@ -1467,7 +1467,7 @@ srpc_lnet_ev_handler(struct lnet_event *ev)
                          sv->sv_shuttingdown);
 
                 buffer = container_of(ev->md.start, srpc_buffer_t, buf_msg);
-                buffer->buf_peer = ev->initiator;
+		buffer->buf_peer = ev->source;
                 buffer->buf_self = ev->target.nid;
 
 		LASSERT(scd->scd_buf_nposted > 0);