ublk_drv: remove unneeded semicolon

Eliminate the following coccicheck warnings:
./drivers/block/ublk_drv.c:1467:2-3: Unneeded semicolon
./drivers/block/ublk_drv.c:1528:2-3: Unneeded semicolon
Reported-by: NAbaci Robot <abaci@linux.alibaba.com>
Signed-off-by: NYang Li <yang.lee@linux.alibaba.com>
Reviewed-by: NMing Lei <ming.lei@redhat.com>
Link: https://lore.kernel.org/r/20220718015431.40185-1-yang.lee@linux.alibaba.comSigned-off-by: NJens Axboe <axboe@kernel.dk>

drivers/block/ublk_drv.c

@@ -1465,7 +1465,7 @@ static int ublk_ctrl_cmd_validate(struct io_uring_cmd *cmd,
 			return -EINVAL;
 		if (!header->addr)
 			return -EINVAL;
-	};
+	}
 
 	return 0;
 }
@@ -1526,7 +1526,7 @@ static int ublk_ctrl_uring_cmd(struct io_uring_cmd *cmd,
 		break;
 	default:
 		break;
-	};
+	}
  out:
 	io_uring_cmd_done(cmd, ret, 0);
 	pr_devel("%s: cmd done ret %d cmd_op %x, dev id %d qid %d\n",