thunderbolt: Remove a meaningless NULL pointer check before dma_pool_destroy

dma_pool_destroy() already takes NULL pointer into account so there is
no need to check that again in tb_ctl_free().

Signed-off-by: zhong jiang <zhongjiang@huawei.com>
[mw: reword commit log a bit]
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/thunderbolt/ctl.c b/drivers/thunderbolt/ctl.c
index 37a7f4c..e54e84e 100644 (file)
--- a/drivers/thunderbolt/ctl.c
+++ b/drivers/thunderbolt/ctl.c
@@ -662,8 +662,7 @@ void tb_ctl_free(struct tb_ctl *ctl)
                tb_ctl_pkg_free(ctl->rx_packets[i]);
 
 
-       if (ctl->frame_pool)
-               dma_pool_destroy(ctl->frame_pool);
+       dma_pool_destroy(ctl->frame_pool);
        kfree(ctl);
 }