ocfs2: clean up redundant NULL checks before kfree

NULL check before kfree is redundant and so clean them up.
Signed-off-by: Joseph Qi <joseph.qi@huawei.com>
Reviewed-by: Mark Fasheh <mfasheh@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

fs/ocfs2/alloc.c

@@ -6178,7 +6178,7 @@ int ocfs2_begin_truncate_log_recovery(struct ocfs2_super *osb,
 		iput(tl_inode);
 	brelse(tl_bh);
 
-	if (status < 0 && (*tl_copy)) {
+	if (status < 0) {
 		kfree(*tl_copy);
 		*tl_copy = NULL;
 		mlog_errno(status);

fs/ocfs2/suballoc.c

@@ -149,10 +149,8 @@ void ocfs2_free_ac_resource(struct ocfs2_alloc_context *ac)
 	brelse(ac->ac_bh);
 	ac->ac_bh = NULL;
 	ac->ac_resv = NULL;
-	if (ac->ac_find_loc_priv) {
 	kfree(ac->ac_find_loc_priv);
 	ac->ac_find_loc_priv = NULL;
-	}
 }
 
 void ocfs2_free_alloc_context(struct ocfs2_alloc_context *ac)