staging: media: davinci_vpfe: Remove useless intialisation

Remove intialisation of a variable that is immediately reassigned.

The semantic patch used to find this is:

// <smpl>
@@
type T;
identifier x;
constant C;
expression e;
@@

T x
- = C
 ;
x = e;
// </smpl>
Signed-off-by: NAmitoj Kaur Chawla <amitoj1606@gmail.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/media/davinci_vpfe/vpfe_mc_capture.c

@@ -294,7 +294,7 @@ static void vpfe_detach_irq(struct vpfe_device *vpfe_dev)
  */
 static int vpfe_attach_irq(struct vpfe_device *vpfe_dev)
 {
-	int ret = 0;
+	int ret;
 
 	ret = request_irq(vpfe_dev->ccdc_irq0, vpfe_isr, 0,
 			  "vpfe_capture0", vpfe_dev);