staging/crystalhd: assign PTR_ERR at fail cases to rc in chd_dec_init_chdev

the rc assignment to PTR_ERR at fail cases of class_create and device_create are missed out,
return proper error rather than returning -ENODEV.
Signed-off-by: NDevendra Naga <develkernel412222@gmail.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/crystalhd/crystalhd_lnx.c

@@ -373,6 +373,7 @@ static int __devinit chd_dec_init_chdev(struct crystalhd_adp *adp)
 	/* register crystalhd class */
 	crystalhd_class = class_create(THIS_MODULE, "crystalhd");
 	if (IS_ERR(crystalhd_class)) {
+		rc = PTR_ERR(crystalhd_class);
 		BCMLOG_ERR("failed to create class\n");
 		goto fail;
 	}
@@ -380,6 +381,7 @@ static int __devinit chd_dec_init_chdev(struct crystalhd_adp *adp)
 	dev = device_create(crystalhd_class, NULL, MKDEV(adp->chd_dec_major, 0),
 			    NULL, "crystalhd");
 	if (IS_ERR(dev)) {
+		rc = PTR_ERR(crystalhd_class);
 		BCMLOG_ERR("failed to create device\n");
 		goto device_create_fail;
 	}