dmaengine: mic_x100_dma: 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: Sudeep Dutt <sudeep.dutt@intel.com>
Cc: Ashutosh Dixit <ashutosh.dixit@intel.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Vinod Koul <vkoul@kernel.org>
Cc: dmaengine@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Sudeep Dutt <sudeep.dutt@intel.com>
Signed-off-by: Vinod Koul <vkoul@kernel.org>

drivers/dma/mic_x100_dma.c

@@ -728,10 +728,8 @@ static int mic_dma_driver_probe(struct mbus_device *mbdev)
 	if (mic_dma_dbg) {
 		mic_dma_dev->dbg_dir = debugfs_create_dir(dev_name(&mbdev->dev),
 							  mic_dma_dbg);
-		if (mic_dma_dev->dbg_dir)
-			debugfs_create_file("mic_dma_reg", 0444,
-					    mic_dma_dev->dbg_dir, mic_dma_dev,
-					    &mic_dma_reg_fops);
+		debugfs_create_file("mic_dma_reg", 0444, mic_dma_dev->dbg_dir,
+				    mic_dma_dev, &mic_dma_reg_fops);
 	}
 	return 0;
 }