nvmet: Use PTR_ERR_OR_ZERO() in nvmet_init_discovery()

Simplify this function implementation by using a known function.

Generated by: scripts/coccinelle/api/ptr_ret.cocci
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Sagi Grimberg <sagi@grimberg.me>

diff --git a/drivers/nvme/target/discovery.c b/drivers/nvme/target/discovery.c
index 8efca26..3764a89 100644 (file)
--- a/drivers/nvme/target/discovery.c
+++ b/drivers/nvme/target/discovery.c
@@ -381,9 +381,7 @@ int __init nvmet_init_discovery(void)
 {
        nvmet_disc_subsys =
                nvmet_subsys_alloc(NVME_DISC_SUBSYS_NAME, NVME_NQN_DISC);
-       if (IS_ERR(nvmet_disc_subsys))
-               return PTR_ERR(nvmet_disc_subsys);
-       return 0;
+       return PTR_ERR_OR_ZERO(nvmet_disc_subsys);
 }
 
 void nvmet_exit_discovery(void)