staging: dgnc: dgnc_driver: Remove useless initialisation

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: Amitoj Kaur Chawla <amitoj1606@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/dgnc/dgnc_driver.c

@@ -167,7 +167,7 @@ static void dgnc_cleanup_module(void)
  */
 static int __init dgnc_init_module(void)
 {
-	int rc = 0;
+	int rc;
 
 	/*
 	 * Initialize global stuff