ptp: fc3: remove redundant check on variable ret

The check on ret has already been performed a few statements earlier
and ret has not been re-assigned and so the re-checking is redundant.
Clean up the code by removing the redundant check.

Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
Link: https://patch.msgid.link/20241031135042.3250614-1-colin.i.king@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

drivers/ptp/ptp_fc3.c

@@ -986,11 +986,6 @@ static int idtfc3_probe(struct platform_device *pdev)
 
 	mutex_unlock(idtfc3->lock);
 
-	if (err) {
-		ptp_clock_unregister(idtfc3->ptp_clock);
-		return err;
-	}
-
 	platform_set_drvdata(pdev, idtfc3);
 
 	return 0;