[media] s5k5baf: Check v4l2_of_parse_endpoint() return value

The v4l2_of_parse_endpoint() function can fail so check the return value.
Signed-off-by: NJavier Martinez Canillas <javier@osg.samsung.com>
Acked-by: NSakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@osg.samsung.com>

drivers/media/i2c/s5k5baf.c

@@ -1868,8 +1868,11 @@ static int s5k5baf_parse_device_node(struct s5k5baf *state, struct device *dev)
 		return -EINVAL;
 	}
 
-	v4l2_of_parse_endpoint(node_ep, &ep);
+	ret = v4l2_of_parse_endpoint(node_ep, &ep);
 	of_node_put(node_ep);
+	if (ret)
+		return ret;
+
 	state->bus_type = ep.bus_type;
 
 	switch (state->bus_type) {