media: ov2740: Remove duplicate check for NULL fwnode

fwnode API does proper checks and returns correct codes, no need
to repeat it in the caller.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Bingbu Cao <bingbu.cao@intel.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>

drivers/media/i2c/ov2740.c

@@ -991,9 +991,6 @@ static int ov2740_check_hwcfg(struct device *dev)
 	int ret;
 	unsigned int i, j;
 
-	if (!fwnode)
-		return -ENXIO;
-
 	ret = fwnode_property_read_u32(fwnode, "clock-frequency", &mclk);
 	if (ret)
 		return ret;