[media] staging: as102: Remove redundant NULL check before release_firmware() and pointless comments

release_firmware() deals gracefullt with NULL pointers - it's
redundant to check for them before calling the function.

Also remove a few pointless comments - it's rather obvious from the
code that kfree() free's a buffer and that release_firmware() releases
firmware - comments just stating that add no value.

Signed-off-by: Jesper Juhl <jj@chaosbits.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

drivers/staging/media/as102/as102_fw.c

@@ -230,11 +230,8 @@ int as102_fw_upload(struct as10x_bus_adapter_t *bus_adap)
 	pr_info("%s: firmware: %s loaded with success\n",
 		DRIVER_NAME, fw2);
 error:
-	/* free data buffer */
 	kfree(cmd_buf);
-	/* release firmware if needed */
-	if (firmware != NULL)
-		release_firmware(firmware);
+	release_firmware(firmware);
 
 	LEAVE();
 	return errno;