RDMA/rtrs-clt: Move free_permit from free_clt to rtrs_clt_close

Error path of rtrs_clt_open() calls free_clt(), where free_permit is
called.  This is wrong since error path of rtrs_clt_open() does not need
to call free_permit().

Also, moving free_permits() call to rtrs_clt_close(), makes it more
aligned with the call to alloc_permit() in rtrs_clt_open().

Fixes: 6a98d71 ("RDMA/rtrs: client: main functionality")
Link: https://lore.kernel.org/r/20220217030929.323849-2-haris.iqbal@ionos.com
Signed-off-by: Md Haris Iqbal <haris.iqbal@ionos.com>
Reviewed-by: Jack Wang <jinpu.wang@ionos.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>

drivers/infiniband/ulp/rtrs/rtrs-clt.c

@@ -2771,7 +2771,6 @@ static struct rtrs_clt_sess *alloc_clt(const char *sessname, size_t paths_num,
 
 static void free_clt(struct rtrs_clt_sess *clt)
 {
-	free_permits(clt);
 	free_percpu(clt->pcpu_path);
 
 	/*
@@ -2893,6 +2892,7 @@ void rtrs_clt_close(struct rtrs_clt_sess *clt)
 		rtrs_clt_destroy_path_files(clt_path, NULL);
 		kobject_put(&clt_path->kobj);
 	}
+	free_permits(clt);
 	free_clt(clt);
 }
 EXPORT_SYMBOL(rtrs_clt_close);