netfilter: Deletion of unnecessary checks before two function calls

The functions free_percpu() and module_put() test whether their argument
is NULL and then return immediately. Thus the test around the call is
not needed.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Acked-by: Julian Anastasov <ja@ssi.bg>
Acked-by: Simon Horman <horms@verge.net.au>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

5 files changed, 5 insertions, 10 deletions

diff --git a/net/netfilter/ipvs/ip_vs_ctl.c b/net/netfilter/ipvs/ip_vs_ctl.c
index ac7ba689efe7..b8295a430a56 100644
--- a/net/netfilter/ipvs/ip_vs_ctl.c
+++ b/net/netfilter/ipvs/ip_vs_ctl.c
@@ -465,8 +465,7 @@ __ip_vs_bind_svc(struct ip_vs_dest *dest, struct ip_vs_service *svc)
 
 static void ip_vs_service_free(struct ip_vs_service *svc)
 {
-        if (svc->stats.cpustats)
-                free_percpu(svc->stats.cpustats);
+        free_percpu(svc->stats.cpustats);
         kfree(svc);
 }
 
diff --git a/net/netfilter/ipvs/ip_vs_pe.c b/net/netfilter/ipvs/ip_vs_pe.c
index 1a82b29ce8ea..0df17caa8af6 100644
--- a/net/netfilter/ipvs/ip_vs_pe.c
+++ b/net/netfilter/ipvs/ip_vs_pe.c
@@ -37,8 +37,7 @@ struct ip_vs_pe *__ip_vs_pe_getbyname(const char *pe_name)
                         rcu_read_unlock();
                         return pe;
                 }
-                if (pe->module)
-                        module_put(pe->module);
+                module_put(pe->module);
         }
         rcu_read_unlock();
 
diff --git a/net/netfilter/ipvs/ip_vs_sched.c b/net/netfilter/ipvs/ip_vs_sched.c
index 4dbcda6258bc..199760c71f39 100644
--- a/net/netfilter/ipvs/ip_vs_sched.c
+++ b/net/netfilter/ipvs/ip_vs_sched.c
@@ -104,8 +104,7 @@ static struct ip_vs_scheduler *ip_vs_sched_getbyname(const char *sched_name)
                         mutex_unlock(&ip_vs_sched_mutex);
                         return sched;
                 }
-                if (sched->module)
-                        module_put(sched->module);
+                module_put(sched->module);
         }
 
         mutex_unlock(&ip_vs_sched_mutex);
diff --git a/net/netfilter/ipvs/ip_vs_sync.c b/net/netfilter/ipvs/ip_vs_sync.c
index 7162c86fd50d..c47ffd7a0a70 100644
--- a/net/netfilter/ipvs/ip_vs_sync.c
+++ b/net/netfilter/ipvs/ip_vs_sync.c
@@ -820,8 +820,7 @@ ip_vs_conn_fill_param_sync(struct net *net, int af, union ip_vs_sync_conn *sc,
 
                 p->pe_data = kmemdup(pe_data, pe_data_len, GFP_ATOMIC);
                 if (!p->pe_data) {
-                        if (p->pe->module)
-                                module_put(p->pe->module);
+                        module_put(p->pe->module);
                         return -ENOMEM;
                 }
                 p->pe_data_len = pe_data_len;
diff --git a/net/netfilter/nf_tables_api.c b/net/netfilter/nf_tables_api.c
index 1ffb253c6a77..18a9daef22dd 100644
--- a/net/netfilter/nf_tables_api.c
+++ b/net/netfilter/nf_tables_api.c
@@ -3674,8 +3674,7 @@ static int nf_tables_abort(struct sk_buff *skb)
                         break;
                 case NFT_MSG_NEWCHAIN:
                         if (nft_trans_chain_update(trans)) {
-                                if (nft_trans_chain_stats(trans))
-                                        free_percpu(nft_trans_chain_stats(trans));
+                                free_percpu(nft_trans_chain_stats(trans));
 
                                 nft_trans_destroy(trans);
                         } else {