ALSA: ctxfi - Remove useless initializations and cast

Remove useless variable initializations and cast at the beginning of
functions.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/sound/pci/ctxfi/cthardware.c b/sound/pci/ctxfi/cthardware.c
index 53d1aca..5ec6813 100644
--- a/sound/pci/ctxfi/cthardware.c
+++ b/sound/pci/ctxfi/cthardware.c
@@ -22,7 +22,7 @@
 
 static enum CHIPTYP __devinitdata get_chip_type(struct hw *hw)
 {
-	enum CHIPTYP type = ATCNONE;
+	enum CHIPTYP type;
 
 	switch (hw->pci->device) {
 	case 0x0005:	/* 20k1 device */
@@ -41,7 +41,7 @@
 
 int __devinit create_hw_obj(struct pci_dev *pci, struct hw **rhw)
 {
-	int err = 0;
+	int err;
 
 	switch (pci->device) {
 	case 0x0005:	/* 20k1 device */
@@ -65,7 +65,7 @@
 
 int destroy_hw_obj(struct hw *hw)
 {
-	int err = 0;
+	int err;
 
 	switch (hw->pci->device) {
 	case 0x0005:	/* 20k1 device */