Input: ims-pcu - fix dead code in ims_pcu_ofn_reg_addr_store()

Coverity pointed out that at return point error is always 0 so the
conditional is not needed.
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

drivers/input/misc/ims-pcu.c

@@ -1381,7 +1381,7 @@ static ssize_t ims_pcu_ofn_reg_addr_store(struct device *dev,
 	pcu->ofn_reg_addr = value;
 	mutex_unlock(&pcu->cmd_mutex);
 
-	return error ?: count;
+	return count;
 }
 
 static DEVICE_ATTR(reg_addr, S_IRUGO | S_IWUSR,