[PATCH] ftrace: remove unused varible 'ret'

[Alex Shi]

'ret' in 2 functions are not used. and one of them is a void function.
So remove them to avoid gcc warning:
kernel/trace/ftrace.c:4166:6: warning: variable ‘ret’ set but not used
[-Wunused-but-set-variable]
kernel/trace/ftrace.c:5571:6: warning: variable ‘ret’ set but not used
[-Wunused-but-set-variable]

Signed-off-by: Alex Shi <alex....@linux.alibaba.com>
Cc: Steven Rostedt <rost...@goodmis.org> 
Cc: Ingo Molnar <mi...@redhat.com> 
Cc: linux-kernel@vger.kernel.org 
---
 kernel/trace/ftrace.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c
index 8185f7240095..466b8359cbad 100644
--- a/kernel/trace/ftrace.c
+++ b/kernel/trace/ftrace.c
@@ -4163,7 +4163,6 @@ static void process_mod_list(struct list_head *head, 
struct ftrace_ops *ops,
        struct ftrace_hash **orig_hash, *new_hash;
        LIST_HEAD(process_mods);
        char *func;
-       int ret;
 
        mutex_lock(&ops->func_hash->regex_lock);
 
@@ -4216,7 +4215,7 @@ static void process_mod_list(struct list_head *head, 
struct ftrace_ops *ops,
 
        mutex_lock(&ftrace_lock);
 
-       ret = ftrace_hash_move_and_update_ops(ops, orig_hash,
+       ftrace_hash_move_and_update_ops(ops, orig_hash,
                                              new_hash, enable);
        mutex_unlock(&ftrace_lock);
 
@@ -5568,7 +5567,6 @@ int ftrace_regex_release(struct inode *inode, struct file 
*file)
        struct ftrace_hash **orig_hash;
        struct trace_parser *parser;
        int filter_hash;
-       int ret;
 
        if (file->f_mode & FMODE_READ) {
                iter = m->private;
@@ -5596,7 +5594,7 @@ int ftrace_regex_release(struct inode *inode, struct file 
*file)
                        orig_hash = &iter->ops->func_hash->notrace_hash;
 
                mutex_lock(&ftrace_lock);
-               ret = ftrace_hash_move_and_update_ops(iter->ops, orig_hash,
+               ftrace_hash_move_and_update_ops(iter->ops, orig_hash,
                                                      iter->hash, filter_hash);
                mutex_unlock(&ftrace_lock);
        } else {
-- 
1.8.3.1