[PATCH] net: sched: use PTR_ERR_OR_ZERO macro in tcf_block_cb_register

This line makes up what macro PTR_ERR_OR_ZERO already does. So,
make use of PTR_ERR_OR_ZERO rather than an open-code version.

This code was detected with the help of Coccinelle.

Signed-off-by: Gustavo A. R. Silva <redacted>
---
 net/sched/cls_api.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/sched/cls_api.c b/net/sched/cls_api.c
index c51b1b1..570325f 100644
--- a/net/sched/cls_api.c
+++ b/net/sched/cls_api.c

@@ -818,7 +818,7 @@ int tcf_block_cb_register(struct tcf_block *block,
 
 	block_cb = __tcf_block_cb_register(block, cb, cb_ident, cb_priv,
 					   extack);
-	return IS_ERR(block_cb) ? PTR_ERR(block_cb) : 0;
+	return PTR_ERR_OR_ZERO(block_cb);
 }
 EXPORT_SYMBOL(tcf_block_cb_register);
 

-- 
2.7.4