media: uvcvideo: drop error check of debugfs_create_dir()

No need check the return value of debugfs_create_dir()
Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Link: https://lore.kernel.org/r/1573541519-28488-1-git-send-email-chunfeng.yun@mediatek.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/media/usb/uvc/uvc_debugfs.c

@@ -108,15 +108,7 @@ void uvc_debugfs_cleanup_stream(struct uvc_streaming *stream)
 
 void uvc_debugfs_init(void)
 {
-	struct dentry *dir;
-
-	dir = debugfs_create_dir("uvcvideo", usb_debug_root);
-	if (IS_ERR_OR_NULL(dir)) {
-		uvc_printk(KERN_INFO, "Unable to create debugfs directory\n");
-		return;
-	}
-
-	uvc_debugfs_root_dir = dir;
+	uvc_debugfs_root_dir = debugfs_create_dir("uvcvideo", usb_debug_root);
 }
 
 void uvc_debugfs_cleanup(void)