ti-soc-thermal: Delete error messages for failed memory allocations in ti_bandgap_build()

The script "checkpatch.pl" pointed information out like the following.

WARNING: Possible unnecessary 'out of memory' message

Thus remove such statements here.

Link: http://events.linuxfoundation.org/sites/events/files/slides/LCJ16-Refactor_Strings-WSang_0.pdf
Acked-by: Keerthy <[e-mail]>
Tested-by: Keerthy <[e-mail]>
Signed-off-by: Markus Elfring <[e-mail]>
Signed-off-by: Eduardo Valentin <[e-mail]>

drivers/thermal/ti-soc-thermal/ti-bandgap.c

···
 	}
 
 	bgp = devm_kzalloc(&pdev->dev, sizeof(*bgp), GFP_KERNEL);
-	if (!bgp) {
-		dev_err(&pdev->dev, "Unable to allocate mem for driver ref\n");
+	if (!bgp)
 		return ERR_PTR(-ENOMEM);
-	}
 
 	of_id = of_match_device(of_ti_bandgap_match, &pdev->dev);
 	if (of_id)
···
 	/* register shadow for context save and restore */
 	bgp->regval = devm_kcalloc(&pdev->dev, bgp->conf->sensor_count,
 				   sizeof(*bgp->regval), GFP_KERNEL);
-	if (!bgp->regval) {
-		dev_err(&pdev->dev, "Unable to allocate mem for driver ref\n");
+	if (!bgp->regval)
 		return ERR_PTR(-ENOMEM);
-	}
 
 	i = 0;
 	do {