libertas: 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.

Cc: Kalle Valo <kvalo@codeaurora.org>
Cc: libertas-dev@lists.infradead.org
Cc: linux-wireless@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

drivers/net/wireless/marvell/libertas/debugfs.c

@@ -708,8 +708,6 @@ void lbs_debugfs_init_one(struct lbs_private *priv, struct net_device *dev)
 		goto exit;
 
 	priv->debugfs_dir = debugfs_create_dir(dev->name, lbs_dir);
-	if (!priv->debugfs_dir)
-		goto exit;
 
 	for (i=0; i<ARRAY_SIZE(debugfs_files); i++) {
 		files = &debugfs_files[i];
@@ -721,8 +719,6 @@ void lbs_debugfs_init_one(struct lbs_private *priv, struct net_device *dev)
 	}
 
 	priv->events_dir = debugfs_create_dir("subscribed_events", priv->debugfs_dir);
-	if (!priv->events_dir)
-		goto exit;
 
 	for (i=0; i<ARRAY_SIZE(debugfs_events_files); i++) {
 		files = &debugfs_events_files[i];
@@ -734,8 +730,6 @@ void lbs_debugfs_init_one(struct lbs_private *priv, struct net_device *dev)
 	}
 
 	priv->regs_dir = debugfs_create_dir("registers", priv->debugfs_dir);
-	if (!priv->regs_dir)
-		goto exit;
 
 	for (i=0; i<ARRAY_SIZE(debugfs_regs_files); i++) {
 		files = &debugfs_regs_files[i];