scsi: sym53c8xx_2: remove redundant assignment to retv

Variable retv is initialized to a value that is never read and it is
re-assigned later. The initialization is redundant and can be removed.

Addresses-Coverity: ("Unused value")
Signed-off-by: NColin Ian King <colin.king@canonical.com>
Acked-by: NMatthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

drivers/scsi/sym53c8xx_2/sym_nvram.c

@@ -648,7 +648,7 @@ static int sym_read_T93C46_nvram(struct sym_device *np, Tekram_nvram *nvram)
 {
 	u_char gpcntl, gpreg;
 	u_char old_gpcntl, old_gpreg;
-	int retv = 1;
+	int retv;
 
 	/* save current state of GPCNTL and GPREG */
 	old_gpreg	= INB(np, nc_gpreg);