pata_mpc52xx: Delete an error message for a failed memory allocation in mpc52xx_ata_probe()

Omit an extra message for a memory allocation failure in this function.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <[e-mail]>
Signed-off-by: Tejun Heo <[e-mail]>

drivers/ata/pata_mpc52xx.c

···
 	/* Prepare our private structure */
 	priv = devm_kzalloc(&op->dev, sizeof(*priv), GFP_ATOMIC);
 	if (!priv) {
-		dev_err(&op->dev, "error allocating private structure\n");
 		rv = -ENOMEM;
 		goto err1;
 	}