xfs: fix function pointer type in ftrace format

Use %pS instead of %pF in ftrace strings so that we record the actual
function address instead of the function descriptor.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Eric Sandeen <sandeen@redhat.com>

fs/xfs/scrub/trace.h

@@ -473,7 +473,7 @@ TRACE_EVENT(xchk_xref_error,
 		__entry->error = error;
 		__entry->ret_ip = ret_ip;
 	),
-	TP_printk("dev %d:%d type %u xref error %d ret_ip %pF",
+	TP_printk("dev %d:%d type %u xref error %d ret_ip %pS",
 		  MAJOR(__entry->dev), MINOR(__entry->dev),
 		  __entry->type,
 		  __entry->error,