USB: yurex: remove needless check before usb_free_coherent()

usb_free_coherent() is safe with NULL addr and this check is
not required.

Signed-off-by: Xu Wang <vulab@iscas.ac.cn>
Link: https://lore.kernel.org/r/20200810020802.9082-1-vulab@iscas.ac.cn
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/usb/misc/yurex.c b/drivers/usb/misc/yurex.c
index 6e7d34e..2063ef0 100644 (file)
--- a/drivers/usb/misc/yurex.c
+++ b/drivers/usb/misc/yurex.c
@@ -96,15 +96,13 @@ static void yurex_delete(struct kref *kref)
        if (dev->cntl_urb) {
                usb_kill_urb(dev->cntl_urb);
                kfree(dev->cntl_req);
-               if (dev->cntl_buffer)
-                       usb_free_coherent(dev->udev, YUREX_BUF_SIZE,
+               usb_free_coherent(dev->udev, YUREX_BUF_SIZE,
                                dev->cntl_buffer, dev->cntl_urb->transfer_dma);
                usb_free_urb(dev->cntl_urb);
        }
        if (dev->urb) {
                usb_kill_urb(dev->urb);
-               if (dev->int_buffer)
-                       usb_free_coherent(dev->udev, YUREX_BUF_SIZE,
+               usb_free_coherent(dev->udev, YUREX_BUF_SIZE,
                                dev->int_buffer, dev->urb->transfer_dma);
                usb_free_urb(dev->urb);
        }