files-reg: fixup order in message at link error path

Error messages in linkat_hard and open_path about link errors contradict
each other, fix the wrong one.
Signed-off-by: Pavel Tikhomirov <ptikhomirov@virtuozzo.com>
Signed-off-by: Andrei Vagin <avagin@gmail.com>

criu/files-reg.c

@@ -1623,8 +1623,8 @@ int open_path(struct file_desc *d,
 			static char tmp_path[PATH_MAX];
 
 			if (errno != EEXIST) {
-				pr_perror("Can't link %s -> %s", rfi->path,
-						rfi->remap->rpath);
+				pr_perror("Can't link %s -> %s",
+					  rfi->remap->rpath, rfi->path);
 				return -1;
 			}