media: atomisp: Simplify v4l2_fh_open() error handling

v4l2_fh_open() can only fail with -ENOMEM and as a generic rule drivers
do not log their own errors for -ENOMEM since the kernel will already
have complained loudly about this before the -ENOMEM return.

Remove the unnecessary error logging from atomisp_open().
Reviewed-by: Andy Shevchenko <andriy.shevchenko@intel.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>

drivers/staging/media/atomisp/pci/atomisp_fops.c

@@ -708,12 +708,8 @@ static int atomisp_open(struct file *file)
 	dev_dbg(isp->dev, "open device %s\n", vdev->name);
 
 	ret = v4l2_fh_open(file);
-	if (ret) {
-		dev_err(isp->dev,
-			"%s: v4l2_fh_open() returned error %d\n",
-		       __func__, ret);
+	if (ret)
 		return ret;
-	}
 
 	rt_mutex_lock(&isp->mutex);