USB: udc: atmel_usba_udc: no need to check return value of debugfs_create functions

When calling debugfs functions, there is no need to ever check the return value. The function can work or not, but the code logic should never do something different based on this.

There is also no need to keep the file dentries around at all, so remove those variables from the device structure.

Cc Nicolas Ferre <[email protected]>

Cc Felipe Balbi <[email protected]>

Cc Alexandre Belloni <[email protected]>

Signed-off-by Greg Kroah-Hartman <[email protected]>

---
 drivers/usb/gadget/udc/atmel_usba_udc.c | 71 ++++---------------------
 drivers/usb/gadget/udc/atmel_usba_udc.h |  4 --
 2 files changed, 11 insertions(+), 64 deletions(-)

drivers/usb/gadget/udc/atmel_usba_udc.c +0 -16

index 2f586f2bda7e..a4d99bf50f2f 100644
@@ -206,94 +206,45 @@ static void usba_ep_init_debugfs(struct usba_udc *udc,
 	struct dentry *ep_root;
 
 	ep_root = debugfs_create_dir(ep->ep.name, udc->debugfs_root);
-	if (!ep_root)
-		goto err_root;
 	ep->debugfs_dir = ep_root;
 
-	ep->debugfs_queue = debugfs_create_file("queue", 0400, ep_root,
-						ep, &queue_dbg_fops);
-	if (!ep->debugfs_queue)
-		goto err_queue;
-
-	if (ep->can_dma) {
-		ep->debugfs_dma_status
-			= debugfs_create_u32("dma_status", 0400, ep_root,
-					&ep->last_dma_status);
-		if (!ep->debugfs_dma_status)
-			goto err_dma_status;
-	}
-	if (ep_is_control(ep)) {
-		ep->debugfs_state