[PATCH wireless] wifi: ath10k: Fix an error code problem in ath10k_dbg_sta_write_peer_debug_trigger()

[Su Hui]

Clang Static Checker (scan-build) Warning:
drivers/net/wireless/ath/ath10k/debugfs_sta.c:line 429, column 3
Value stored to 'ret' is never read.

Return 'ret' rather than 'count' when 'ret' stores an error code.
By the way, remove some useless code.

Fixes: ee8b08a1be82 ("ath10k: add debugfs support to get per peer tids log via 
tracing")
Signed-off-by: Su Hui <su...@nfschina.com>
---
 drivers/net/wireless/ath/ath10k/debugfs_sta.c | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

diff --git a/drivers/net/wireless/ath/ath10k/debugfs_sta.c 
b/drivers/net/wireless/ath/ath10k/debugfs_sta.c
index 394bf3c32abf..5525dabe390a 100644
--- a/drivers/net/wireless/ath/ath10k/debugfs_sta.c
+++ b/drivers/net/wireless/ath/ath10k/debugfs_sta.c
@@ -415,7 +415,7 @@ ath10k_dbg_sta_write_peer_debug_trigger(struct file *file,
        struct ath10k_sta *arsta = (struct ath10k_sta *)sta->drv_priv;
        struct ath10k *ar = arsta->arvif->ar;
        u8 peer_debug_trigger;
-       int ret;
+       int ret = 0;
 
        if (kstrtou8_from_user(user_buf, count, 0, &peer_debug_trigger))
                return -EINVAL;
@@ -432,14 +432,12 @@ ath10k_dbg_sta_write_peer_debug_trigger(struct file *file,
 
        ret = ath10k_wmi_peer_set_param(ar, arsta->arvif->vdev_id, sta->addr,
                                        ar->wmi.peer_param->debug, 
peer_debug_trigger);
-       if (ret) {
+       if (ret)
                ath10k_warn(ar, "failed to set param to trigger peer tid logs 
for station ret: %d\n",
                            ret);
-               goto out;
-       }
 out:
        mutex_unlock(&ar->conf_mutex);
-       return count;
+       return ret ?: count;
 }
 
 static const struct file_operations fops_peer_debug_trigger = {
-- 
2.30.2