wl12xx: remove some dead code in wl1271_plt_init()

"ret" has already been checked at this point, and we don't need to check
it again.  This was left around from a previous patch 49d750ca14
"wl12xx: 1281/1283 support - New radio structs and functions".

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>

drivers/net/wireless/wl12xx/main.c

@@ -680,8 +680,6 @@ static int wl1271_plt_init(struct wl1271 *wl)
 		if (ret < 0)
 			return ret;
 	}
-	if (ret < 0)
-		return ret;
 
 	/* Chip-specific initializations */
 	ret = wl1271_chip_specific_init(wl);