Input: return -ENOMEM in select drivers when memory allocation fails

Instead of using -1 let's start using proper error codes.

Signed-off-by: Davidlohr Bueso <[e-mail]>
Signed-off-by: Dmitry Torokhov <[e-mail]>

drivers/input/misc/powermate.c

···
 
 	pm->configcr = kmalloc(sizeof(*(pm->configcr)), GFP_KERNEL);
 	if (!pm->configcr)
-		return -1;
+		return -ENOMEM;
 
 	return 0;
 }

drivers/input/mouse/elantech.c

···
 
 	psmouse->private = etd = kzalloc(sizeof(struct elantech_data), GFP_KERNEL);
 	if (!etd)
-		return -1;
+		return -ENOMEM;
 
 	etd->parity[0] = 1;
 	for (i = 1; i < 256; i++)

drivers/input/mouse/synaptics.c

···
 
 	psmouse->private = priv = kzalloc(sizeof(struct synaptics_data), GFP_KERNEL);
 	if (!priv)
-		return -1;
+		return -ENOMEM;
 
 	psmouse_reset(psmouse);
 

drivers/input/mouse/trackpoint.c

···
 
 	psmouse->private = kzalloc(sizeof(struct trackpoint_data), GFP_KERNEL);
 	if (!psmouse->private)
-		return -1;
+		return -ENOMEM;
 
 	psmouse->vendor = "IBM";
 	psmouse->name = "TrackPoint";