staging: nvec: remove unneccessary 'out of memory' message

Fix the following warning reported by checkpatch.pl:

WARNING: Possible unnecessary 'out of memory' message
811: FILE: drivers/staging/nvec/nvec.c:811
Signed-off-by: Pawel Lebioda <pawel.lebioda89@gmail.com>
Acked-by: Marc Dietrich <marvin24@gmx.de>
Reviewed-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/nvec/nvec.c

@@ -806,10 +806,9 @@ static int tegra_nvec_probe(struct platform_device *pdev)
 	}
 
 	nvec = devm_kzalloc(&pdev->dev, sizeof(struct nvec_chip), GFP_KERNEL);
-	if (nvec == NULL) {
-		dev_err(&pdev->dev, "failed to reserve memory\n");
+	if (nvec == NULL)
 		return -ENOMEM;
-	}
+
 	platform_set_drvdata(pdev, nvec);
 	nvec->dev = &pdev->dev;