SUNRPC: Fix trace_svc_register() call site

[ Upstream commit 07a27305 ]

The trace event recorded incorrect values for the registered family,
protocol, and port because the arguments are in the wrong order.

Fixes: b4af5932

 ("SUNRPC: Trace server-side rpcbind registration events")
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>