[PATCH net-next] cxgb4: remove redundant NULL check

[Yang Li]

Fix below warnings reported by coccicheck:
./drivers/net/ethernet/chelsio/cxgb4/clip_tbl.c:323:3-9: WARNING:
NULL check before some freeing functions is not needed.
./drivers/net/ethernet/chelsio/cxgb4/cudbg_lib.c:3554:2-8: WARNING:
NULL check before some freeing functions is not needed.
./drivers/net/ethernet/chelsio/cxgb4/cxgb4_cudbg.c:157:2-7: WARNING:
NULL check before some freeing functions is not needed.
./drivers/net/ethernet/chelsio/cxgb4/cxgb4_tc_u32.c:525:3-9: WARNING:
NULL check before some freeing functions is not needed.

Reported-by: Abaci Robot <ab...@linux.alibaba.com>
Signed-off-by: Yang Li <abaci-bug...@linux.alibaba.com>
---
 drivers/net/ethernet/chelsio/cxgb4/clip_tbl.c     | 3 +--
 drivers/net/ethernet/chelsio/cxgb4/cudbg_lib.c    | 3 +--
 drivers/net/ethernet/chelsio/cxgb4/cxgb4_cudbg.c  | 3 +--
 drivers/net/ethernet/chelsio/cxgb4/cxgb4_tc_u32.c | 6 ++----
 4 files changed, 5 insertions(+), 10 deletions(-)

diff --git a/drivers/net/ethernet/chelsio/cxgb4/clip_tbl.c 
b/drivers/net/ethernet/chelsio/cxgb4/clip_tbl.c
index ce28820..12fcf84 100644
--- a/drivers/net/ethernet/chelsio/cxgb4/clip_tbl.c
+++ b/drivers/net/ethernet/chelsio/cxgb4/clip_tbl.c
@@ -323,8 +323,7 @@ void t4_cleanup_clip_tbl(struct adapter *adap)
        struct clip_tbl *ctbl = adap->clipt;
 
        if (ctbl) {
-               if (ctbl->cl_list)
-                       kvfree(ctbl->cl_list);
+               kvfree(ctbl->cl_list);
                kvfree(ctbl);
        }
 }
diff --git a/drivers/net/ethernet/chelsio/cxgb4/cudbg_lib.c 
b/drivers/net/ethernet/chelsio/cxgb4/cudbg_lib.c
index 75474f8..94eb8a6 100644
--- a/drivers/net/ethernet/chelsio/cxgb4/cudbg_lib.c
+++ b/drivers/net/ethernet/chelsio/cxgb4/cudbg_lib.c
@@ -3554,8 +3554,7 @@ int cudbg_collect_qdesc(struct cudbg_init *pdbg_init,
        }
 
 out_free:
-       if (data)
-               kvfree(data);
+       kvfree(data);
 
 #undef QDESC_GET_FLQ
 #undef QDESC_GET_RXQ
diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_cudbg.c 
b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_cudbg.c
index 77648e4..dd66b24 100644
--- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_cudbg.c
+++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_cudbg.c
@@ -157,8 +157,7 @@ static int cudbg_alloc_compress_buff(struct cudbg_init 
*pdbg_init)
 
 static void cudbg_free_compress_buff(struct cudbg_init *pdbg_init)
 {
-       if (pdbg_init->compress_buff)
-               vfree(pdbg_init->compress_buff);
+       vfree(pdbg_init->compress_buff);
 }
 
 int cxgb4_cudbg_collect(struct adapter *adap, void *buf, u32 *buf_size,
diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_tc_u32.c 
b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_tc_u32.c
index dede025..97a811f 100644
--- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_tc_u32.c
+++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_tc_u32.c
@@ -525,12 +525,10 @@ struct cxgb4_tc_u32_table *cxgb4_init_tc_u32(struct 
adapter *adap)
        for (i = 0; i < t->size; i++) {
                struct cxgb4_link *link = &t->table[i];
 
-               if (link->tid_map)
-                       kvfree(link->tid_map);
+               kvfree(link->tid_map);
        }
 
-       if (t)
-               kvfree(t);
+       kvfree(t);
 
        return NULL;
 }
-- 
1.8.3.1