btrfs: remove redundant NULL check before kvfree

Fix below warnings reported by coccicheck:
./fs/btrfs/raid56.c:237:2-8: WARNING: NULL check before some freeing
functions is not needed.

Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Reviewed-by: Anand Jain <anand.jain@oracle.com>
Signed-off-by: Yang Li <abaci-bugfix@linux.alibaba.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

diff --git a/fs/btrfs/raid56.c b/fs/btrfs/raid56.c
index 93fbf87bdc8d3b0ab9070763c9bfdaa519f936a5..5394641541f7a6f862a955ddc51b49fa66bf351e 100644 (file)
--- a/fs/btrfs/raid56.c
+++ b/fs/btrfs/raid56.c
@@ -233,8 +233,7 @@ int btrfs_alloc_stripe_hash_table(struct btrfs_fs_info *info)
        }
 
        x = cmpxchg(&info->stripe_hash_table, NULL, table);
-       if (x)
-               kvfree(x);
+       kvfree(x);
        return 0;
 }